[quote="bnitbe3615"]What is the manufacture date on a model 12A .22 Sn#348xxx(it is possible that my father duplicated the last number so it may actually be 348xx) There is no model markings on the rifle anywhere but sure its a 12A .22 Short, Long or LR.
Thank you for your help.[/quote]
1916 or 1910. The S, L, LR caliber means it's probably 1916. The earliest were stamped LR Only.