The Browning Auto-5 semiautomatic shotgun began production in 1902, and they were made until 1999 when the "Final Tribute" was produced.The Browning Auto-5 Sweet 16 lightweight, 16-gauge shotgun, began production in 1937 and it ran through 1992.After his death in November 1926, the design work was completed by his son Val A. Most importantly, the single selective trigger mechanism that he wanted for the Superposed had been finished by Val. Initially, and until 1939 the Browning Superposed fired via a double trigger set up. shotgun with serial number 6556.1969 started using two digits for the date of manufacture: S=12 gauge V=20 gauge F=28 gauge J=.410 bore This was then preceded by the serial number beginning with 1000. Typically barrel lengths are 26", 28", 30" and 32", and choke borings range from Cylinder to Full. From 1962 serial numbers were followed by the date of manufacture. The Browning Superposed was last firearm to be designed by John Browning and one of the first over-under shotgun designs to be commercially produced.John Browning had envisioned it as the last gun the government would ban from private ownership and was designed to be the first over under shotgun that was affordable to the general population.
Look closely at your gun to make sure it is a Sweet 16, 16-gauge shotgun and not a standard 16-gauge shotgun.
It resembles my 12ga Upland Inv , but the receiver is visibly thinner, and 2" longer barrels.
******PX103, PX says it's made in 1983, and 103=12 ga. No one that has seen and held it, could figure out what it was either.
Serial # is under the lever on the reciever(push to one side as if to oper the action)...
Take the fore end off ...#'s inside on bottom...on the bottom of the barrels when you take them off.