Paiste Serial Numbers

Paiste serial numbers were first applied in about 1972. Prior to this there was no accurate means of determining the age of a Paiste other than to identify the years of production for the series or model, when known. These cymbals are referred to as "Pre-Serial" cymbals. It should also be noted that it is not uncommon for serial numbers to be difficult to read due to hammering and lathing. In these cases, the era of the cymbal can usually be identified, but the exact year may not be determined.
1972 Formula 602 Serial Number

Also of important note, cymbals have been found without serial numbers stamped on them.

This does not apply to serial numbers on many prototypes, nor the German made Paistes, which do not seem to be decipherable. (yet!)