LP
Led Zeppelin IV
UK, 1-Song 10″ (N/A) Acetate

Here is a 10″ acetate from the UK of When The Levee Break for the release Led Zeppelin IV.

Acetates. or better known in the industry as lacquers are the first step in the physical manufacturing of a record. They can be played on a turntable but are not pressed out of plastic like a commercial record. They are lacquer-coated aluminum discs and heavier than commercial records and are one-sided.

Acetates are made for two purposes, to evaluate a recording and its suitability for pressing records and to use in the production of the finished product itself. There are never many acetates made during production, usually no more than 10, which make these pressings very sought after.