The best article on American Arms Co. is the one by Elliot L. Minor in the April 1970 issue of The American Rifleman, but it doesn't have much on their Whitmore-designed hammerless double. My gun withthe lovely copper rivets is serial number 63 --







and has a plain checkered butt plate. Later guns in the 5xx range are found with this lovely Bluffton, Alabama, butt plate --



Pat McKune has had a flyer on these guns for sale for some time.