"I have this old gun..." a mismatch 1916 WW-I Erfurt Kar98a with the L-shaped prong under the muzzle. By the way is that for the bayonet, or stacking? I would call it NRA good, but the bore has a belled muzzle from wrong way cleaning, and it's very inaccurate. It's a nice, displayable example of a type that is kind of hard to find.
OK, my guess is that if a dadgum ground mum Arisaka is worth $500, this gun is worth $350 to $500 just because of its scarcity. BTW I asked the same question over on Wehrmacht rifle and the only reply I got back was $150, which I thought was silly-low. This is really just an exercise as I don't plan on selling it. Just a question.