A deadwax etching is the small inscription cut into the smooth, un-grooved band of vinyl between the final track and the centre label of a record, an area also called the dead wax or the runout groove. The etching is not printed on the label. It is cut by hand with an engraving tool, usually with a pantograph, and it carries the matrix number, the cutting engineer’s mark, the pressing plant code and the side designation, which makes it the most useful piece of evidence a collector has for telling one pressing from another.
It sits in the last 15 to 20 millimetres of the disc, the bit of vinyl the stylus passes through after the music ends and before the label begins. On most records the cutting engineer etches the album and side identifiers there while the lacquer disc is on the lathe, and the pressing plant adds its own code and symbols afterwards. Two people, two stages, two purposes, and one of the most reliable fingerprinting systems in record manufacturing.
Table of Contents
- What Is a Deadwax Etching?
- Where Is the Deadwax Etching on a Vinyl Record?
- What Do Deadwax Etching Codes Mean?
- How Does Deadwax Etching Help Identify a Record Edition?
- Can You Tell a First Pressing from a Reissue by the Etching?
- How Do You Read and Photograph a Deadwax Etching?
- Frequently Asked Questions
- Is every vinyl record supposed to have a deadwax etching?
- Can a deadwax etching prove that a record is a first pressing?
- Why do the letters and numbers in a runout groove change between editions?
- What is the difference between a matrix number and a deadwax etching?
- Does an unusual deadwax mark make a vinyl record valuable?
- How can I read a faint etching on an old record?
- Conclusion: Start with the Runout Groove
What Is a Deadwax Etching?
Put simply, the dead wax is the piece of record with no music on it, and the etching is the text cut into that piece. The stylus cannot read a code there, so nothing about it affects playback. It exists purely as a manufacturing record: a note left by the people who made the disc, and later by the people who pressed it.
Three terms get mixed up constantly, so here is the distinction:
- Dead wax and runout groove are two names for the same physical area. Runout, run-out area and lead-out area all mean the un-grooved band.
- Matrix number is the specific alphanumeric code etched into that area, usually built from the label’s catalogue prefix and number plus a side letter. A matrix number is one item inside the runout, not a synonym for it.
- Stamper code is the separate number the pressing plant adds, usually a letter and a series of digits, that identifies which plant and which run of pressings made that particular copy.
Also worth separating: the catalogue number on the sleeve and the label is the commercial identity of the release. The etching is a manufacturing identity. They usually match, and when they do not, that mismatch is exactly the kind of detail a collector wants to know about.
One more clarification. Most of what sits in the runout is hand-etched, cut into the surface with a stylus driven by a pantograph, sometimes called a stork’s beak because of its shape. Some plants add marks with a stamp instead. Both end up in the same band of vinyl, and both are read the same way, but a stamped symbol is usually crisper than a scratched one.
Where Is the Deadwax Etching on a Vinyl Record?
Look at the area immediately around the label, inside the last spiral of grooves. The music stops, the grooves tighten and then stop, and the flat band begins. That band is the runout, and on a 12-inch LP it runs roughly 15 to 20 millimetres. On a 7-inch single the space is tighter, so the etching is often smaller and abbreviated.
Every record has two runouts, one per side, and they can be completely different. Side A might carry the catalogue number and a cutting engineer’s initials while side B carries a plant code, a tax code and a handwritten note. Always read both. A common mistake is reading only the side facing up when the record is on the platter, because the runout is only visible when the disc is stopped, lifted or turned over, never during playback.
What you hear helps. At the end of the final track the needle enters a shallow lead-out spiral, the music fades, and then you get a brief scrape or chirp as the stylus passes over the etched characters. If a record goes straight from silence to the label without that scrape, the runout is probably blank. It happens. Modern represses sometimes carry nothing but a matrix number, and some cheap or test pressings carry nothing at all. A blank runout is a data point, not a verdict, and it does not by itself make a record a fake or a promo.
What Do Deadwax Etching Codes Mean?
Codes vary by label, plant and country, but the shape is consistent enough to decode. Start with the side letter, then the catalogue prefix, then the number, then the trailing letters, numbers and symbols. Work left to right across the runout and treat each group as answering a different question.
Here is the reference table worth memorising:
| Marking | What it identifies | Example |
|---|---|---|
| Side letter | Which half of the album the disc is | A or B, sometimes 1A, 2A or A-1, B-2 for multi-disc sets |
| Catalogue prefix and number | The label’s own release identifier, matching the sleeve | T-1000, MLPS 091, EMC 2147 |
| Engineer initials or signature | Who cut the master, often a studio name | PORKY, HTM, BLAIRS, BILBO, RL, BG, KG, STRAWBERRY, TOWNHOUSE, COOKIE, MATT’S, COIN, Boppin’ Bob |
| ASTERISK (*) | A production or quality marker whose meaning is label-specific, sometimes a scrape-out replacing earlier characters | *A-1 or A*1 on Atlantic, Pye and Liberty sides |
| Stamper or plant code | The pressing plant and often the pressing run | P, P2, G, EA, G+ or -1A, -1B, -2A |
| Tax or export code | Where the pressing was made, and the tax band of the market it was sold into | T, ST, D, G, Made in West Germany markings on German pressings |
| Handwritten message | Jokes, dedications, competition entries, artwork or a warning | FREE SLY STONE!, FREE JAMES BROWN!, Players Loud As You Like! |
| STEREO or playback notation | Which type of master the cut came from | STEREO, QUAD, or a monophonic cut marked as such |
Now a worked example, because the table only makes sense once you have read one. Take a hypothetical runout reading RL – T-1000-A-1A ★. The T is the label prefix for the release and the following digits are the catalogue number, which is why this record shows up as T-1000 rather than 1000. RL is the signature of the cutting engineer, in this case the initials used by Robert Ludwig. A is the side. -1A is a stamper code: this copy came from plant run number one on the A-side stamper. ★ is an asterisk, and its exact meaning depends entirely on the label, which is the part collectors most often get wrong.
How Does Deadwax Etching Help Identify a Record Edition?
It helps by giving you a second, independent identifier to set against the sleeve. If the sleeve says one catalogue number and the runout says another, you have a mismatch worth chasing. If the runout shows a stamper code that belongs to a different country from the sleeve’s tax code, you are probably looking at a different pressing than the one advertised.
The method is cross-referencing. Note the label design, the catalogue number, the sleeve, the country of manufacture printed on the sleeve or the label, and the full runout on both sides. Then look those up against release entries in a collector database such as Discogs, which lists runout variants per release and often explains the difference between them.
That process is how you separate a first pressing from a later one, spot a different country’s issue, identify a reissue with a redesigned label, or recognise a test or promo pressing. Test pressings and promos often carry a hand-scrawled code such as TEST or a specific copy number, and promotional-only issues frequently have a plain white label with nothing on it, which is a clue in the runout, not proof.
Collectors also use the runout to build the picture for regional pressings. A UK Pye, CBS or Decca release, a German issue with a tax code, and a Japanese pressing all tend to carry different code families in the runout. Once you know the shape of a label’s codes, that difference is readable at a glance.
Can You Tell a First Pressing from a Reissue by the Etching?
You can often narrow it down, but the etching alone is rarely proof. Treat it as one piece of evidence in a set, not a verdict.
Signs that point toward a first or early pressing include an etch signed by the original cutting engineer, no later-plant override code, an early stamper or run letter, and a runout that matches the original release entries for that title.
Signs that point toward a later issue include asterisks or scrape-outs where characters were corrected, extra stamper or tax codes that did not exist on the first run, a matrix number that has been renumbered, and messages that were added for a later promotional push.
The scrape-out case is worth spelling out. On several well-known albums, including Aja, the first character of the matrix was scratched out and replaced, an asterisk beside it flags the correction, and sellers and collectors routinely call those copies first pressings when they are not. A scrape-out usually means the characters were wrong in the first place, which points to a later or corrected run rather than the earliest one.
What the etching does not tell you is just as important. It does not tell you the pressing plant with certainty, because plant codes are reused and copied across labels. It does not guarantee better sound, despite what a premium engineer’s initials seem to promise. It does not prove a record is complete, original to the country printed on the sleeve, or free of later restoration work. And it does not set a price. Runout text is cheap to copy onto a reissue, which is why sellers sometimes use a premium-looking signature to justify a premium they cannot support.
Blank runouts get misread the most. A record with nothing but a matrix number, or nothing at all, is often a later repress, sometimes one where the label was printed and the stamping never happened. Forum regulars ask about blank runouts constantly, and the honest answer is that the absence of a plant code leaves you with the label and sleeve as your only evidence.
How Do You Read and Photograph a Deadwax Etching?
Reading a faint etching takes about a minute of setup. Clean the record first with a carbon fibre brush and a proper fluid, working in the direction of the grooves, then dry it with a lint-free cloth. Grit on the surface scatters light and makes etched characters disappear.
Next, change the angle. Hold the record up to a window or a bright lamp and turn it slowly. Characters scratched into a curved surface only catch the light at certain angles, and the moment the whole inscription appears is usually not the angle you first tried. A jeweller’s loupe or a phone camera held close and slightly off-axis does more than squinting with bare eyes.
Transcribe the entire runout on both sides, character by character, including the order in which groups appear and any symbols at the edges. Write down what you see and what you are guessing separately. Half of the hard cases come down to someone being certain about a character they could not read properly.
Then photograph it. Shoot square to the label so the text is not distorted, use plain light, avoid the camera flash reflecting off the vinyl, and take one image of the whole runout plus close-ups of each group of characters. That file is the thing you will paste into a forum post or compare against a database entry, and it is worth more than your own memory of what you saw in the shop.
Cross-referencing is the last step. Search the catalogue number in Discogs, open the release entry, and read the runout notes. Entries commonly list several variants, with community notes explaining what distinguishes an earlier from a later one. Where the notes are thin, look for the same title sold with photographs of their runouts and compare directly.
Common beginner mistakes are easy to avoid. People read the side they can see and stop there, or they treat the catalogue number and the matrix number as the same code and get confused when they differ. Some read the letters at the wrong end of the runout, and some clean with a cloth and a household spray. Handle the disc by the edges and the label only, never across the grooves, and put it back in the sleeve the same way round.
One more piece of collector folklore worth naming: on at least one plain white-label test 7-inch, someone scratched the message I hope you didn’t pay too much for this you bastard into the runout. It is a fair summary of what a careless buy looks like from the seller’s side of the counter.
Frequently Asked Questions
Is every vinyl record supposed to have a deadwax etching?
No. The runout area exists on every record, but what gets etched into it varies. Most pressings carry a matrix number, often a side letter and sometimes a plant code. Later represses and some budget issues carry only the matrix number, and a small number of pressings have a completely blank runout because the stamping step was skipped. A blank runout usually means a plainer or later pressing, but it does not indicate a fake, a promo or a test copy.
Can a deadwax etching prove that a record is a first pressing?
On its own, no. The etching is one line of evidence among several, and plants copy codes and reuse stampers, so a runout can be reproduced on a later issue. A first pressing claim rests on the runout together with label design, catalogue number, sleeve details, country of manufacture and known runout variants for that release. When those line up, the etching becomes strong evidence. When they disagree, the disagreement is the finding worth reporting.
Why do the letters and numbers in a runout groove change between editions?
Because the runout records what actually happened in manufacturing, and that changes between runs. A new pressing run gets a new stamper or run letter, a different plant uses its own code and tax mark, and a corrected matrix may be etched with an asterisk where a character was scraped out. Later issues are also cut from a new lacquer or direct metal master, sometimes by a different engineer, so the signature changes too.
What is the difference between a matrix number and a deadwax etching?
A matrix number is a code. A deadwax etching is the physical act and the area it happens in. The matrix number sits inside the runout alongside the engineer’s signature, the side letter, the stamper code and any handwritten message, all of which together make up the etching you can read in that band. If a record shows a matrix number and nothing else, the etching is present but sparse.
Does an unusual deadwax mark make a vinyl record valuable?
Not on its own. Collectors pay for a complete, correctly matched copy of an edition that is genuinely scarce, and the runout is how you confirm what you are holding. A rare or altered inscription on a common title usually does not move the value much, and a premium-looking signature on a reissue is worth nothing at all. Check the runout before buying, but weigh it alongside condition, completeness and how many copies of that edition exist.
How can I read a faint etching on an old record?
Clean the record with a carbon fibre brush and record fluid, then change the angle of the light rather than straining to see. Hold the disc up to a window or bright lamp and turn it slowly until the characters catch the light, since scratches on a curved surface only appear at certain angles. A loupe or a phone camera held close and slightly off-axis usually resolves what bare eyes miss. Photograph the whole runout and each group of characters separately before you record your reading.
Conclusion: Start with the Runout Groove
Start at the runout. Read both sides, write down every character and symbol you can see, and photograph the whole band in decent light. Then compare your reading against the label, the catalogue number and the known runout variants for that release, and treat the etching as identification evidence rather than a guarantee of value or authenticity. If the sleeve and the runout disagree, that disagreement is the most interesting thing on the record.
