The first double I ever owned was a J Stevens Arms & Tool Co gun which I purchased in 1954. Unfortunately I traded it off many years ago, but I "Think" it was a 335. If not it was a 325. It was a plain boxlock with cocking cams in the knuckle operating push rods (I think a certain Co making a "21" copied the design) & a detachable floor plate, nothing at all like later Stevens 311's etal, except for the bolting which was the cross wedge bolting into a slot in the rib extension. It did not have the Parker style hinge pin. Can anyone point out the difference between a 325 & a 335?