The best way to determine actual value is to search the online auctions, such as www.gunbroker.com and www.auctionarms.com or even www.proxibid.com enter your details in the search and see what has SOLD and for how much. if there is nothing current try the archives of past sales of items sold. Don't forget condition has allot to do with value, so compare apples to apples.
$150 in mint condition.
what is the value of a jukar black powder pistol 007806
What is the value of a 1850 colt black powder with ships engraved serial number33700
what
that would be a percussion black powder rifle from the civil war. value would depend on overall condition
678.00
Dikar Spain-45 Cal black powder only
10-100usd
With the vast numbers of brands and models it is hard to value, You may have some success at the shotgun world website, (shotgunworld.com) there is a large network of collectors and shotgun experts there that may be able to help.
25 HUNDRED
Requires appraisal
What would you like to know? Value, history, location for parts or repair? I would need to know the condition, and if there are any proof marks on the gun. Also as much detail as possible about it to determine a value or it's history.