bedbugbilly: Unfortunately I don't know the history of this rifle other than I'm told it belonged to my great-grandfather who was from Germany. So I assume it is simply an old hunting rifle that he used.
Bear River: Your post appears to be the best match and I want to thank you for it!
mapsjanhere: Thank you also for posting. I could not find any other markings on the barrel. I also know what you mean with asking prices vs selling prices.