my grandfather died and left me with some pistols. most of them say cva which is the name of the company they are replicas. the gun in question is a walker dragoon. on the revolving barrel it has an imprinted ocean scenery of a schooner and it says 16 may 1846. do replicas place a date like that? the gun isnt as polished as the known replicas. ive taken it to two gunsmiths one says its authentic and one says its a replica. how can i tell?