Varies by type/model of weapon.
Smith and Wesson have never used AT. It should be three alphabet letters, i.e, AAA12354
governor.any Smith and Wesson revolver that was made prior to this year(the govenor) that is chambered for a rimless designed cartridge.This includes the .45ACP, the .40S&W,and the 9mm luger cartridges.
Smith & Wesson M76
No
Smith and Wesson
The Model 10 has always used serial numbers.
NO
62092
Letter frame sizes are used by Smith & Wesson. Dan Wesson Firearms is no relation to S&W, and does not use a letter.
wesson. .44 calibur.
No.
a smith and Wesson 500