The runout (also called the dead wax or run-off groove) is the smooth band between the last song and the label. The letters, numbers and symbols etched or stamped there are the most reliable way to identify exactly which pressing you have.
What you'll find there
- Matrix number: usually matches or relates to the catalog number, with a side marker like A/B or 1/2.
- Lacquer or stamper codes: letters or numbers showing which master and stamper made the copy. Early codes often point to early pressings.
- Plant marks: symbols or letters identifying the pressing plant.
- Engineer initials or stamps: some mastering engineers signed their work, and collectors look for specific names.
- Hand-written messages: occasionally engineers or artists etched short notes.
How to photograph a runout
- Hold the record by the edges under a single bright lamp or window light.
- Tilt it slowly until the etching catches the light.
- Take the photo straight on, close enough that the characters fill the frame.
- Photograph both sides.
Why buyers ask for it
Two copies that look identical from the outside can be different pressings worth very different amounts. The runout settles it. If you're requesting an appraisal, runout photos of your best records help us give you an accurate quote.