Excellent info so far, thank you everyone!

Also, here's the rest of it.

Hey guys, I've got this old Aug Lebeau shotgun and I'm trying to figure out what it is worth. But first I need info on it, like age 'n stuff. So I'm posting here for two reasons. 1. To find out if anyone knows of a good store I can take this shotgun to in order to learn some history, or get a decent...