how can i find out the era in which a single shot bolt action shotgun was made and what the value of it is?
If it's any help to you, about 2 years ago I sold a 16 gauge bolt action shotgun that was made in the 1950's. It was a J. C. Higgins with a fixed modified choke. It worked perfectly although it had a couple of small rust spots on the barrel. I got $95 for it.
EDIT: Oh, another difference was that my gun was not a single shot. It had a tubular magazine that held about 4 or 5 rounds.