Re: double barrel
When you get the gun back, look for any and all markings you can find. Especially look on the top rib and the side of the locks for a makers or sellers name. Look on the bottom of the barrels under the forearm for any proof marks. Belgian made guns will have the letters "ELG" in an oval with a crown over that. English made guns will have crossed halbards (spear/battle axe) or secpters with a crown over that and letters in the intersections. American made guns will have nothing. By the bay, serial number alone are not worth a damn in identifying a gun. There is no centeral listing for serials. Each maker has their own series and it can change with different models.