Shanxi .45 Broomhandle

[Olle]

Just got this in a trade, I think I did good but would still want opinions on the value. It's crudely made, so I would think that this is one of the later manufacture/imports. The previous owner fired it, and said (not surprisingly) that it would misfeed and fire double/triple shots now and then. It obviously needs some tweaking to work right, but I don't know if it's worth the effort. Still, no import marks and near perfect condition. What do you think this is worth? Is it a collectible, or a conversation piece?