I received these in trade, and dont know much about them but I will list what I do know. They are fun to shoot just not really my thing. Asking $650. Willing to trade for 9mm or 5.56 ammo or anything else cool. Two work flawless and the other two could use some internal work. 

(I believe they are all) Armi San Marco.

.44 cal. 4 total with case. 

1 Remington 1858 

2 Colt 1851 Navy's (one has the lugs to attach a stock) both have engraved cylinders. *One of these needs some work.

1 1851 ( short round barrel) *needs some work