.22 LR,.32 ACP, or.380 ACP cal., PP designates 'Polizei Pistole,' 3 7/8 in. Barrel, blue, fixed sights, plastic grips. Ucla Psychiatric Rehabilitation Program. 'Crown N' proof until 1939, 'Eagle N' Nazi commercial proof until 1945. Serialization 750,000 (1929) - 1,000,000 (combined with PPK, late 1930s), then PP was assigned its own ser. SERIALIZATIONSERIALIZATION, cont. Spector Bass Korean Serial Numbers. AGUIRRE Y ARANZABAL. (AYA) SERIALIZATION. 1945 to 1994. From 1945 to 1994 AYA had manufactured over. 600,000 shotguns of all models and grades with all serial numbers assigned in chronological order. 1927-1944 year of manufacture date codes,.

One way you can tell if a gun and mag match is the serial number on all parts stamped.the frame, the slide, and the mag, have the exact same font. Were they stamped with the same die, or were there two different stamping machines stamping the same number? Usually but not always.depends on the version/variation. For example, some PP's have pantographed serial numbers running vertically on the slide. Some variations have serial numbers stamped in a different size or font on the spine or bottom floorplate of the magazines.