You sound miffed, Peter. The serial is PF332XXX, manufacture date 12/54. Purchased roughly 20 years ago in wrap. Cleaned by me. As for "asking my buddy", why would I do that? He didn't manufacture the rifle, he simply bought at the same time I did, also mummified. Now I guess it's possible that both of our elderly memories have failed us, and that we both added a superfluous swivel by the muzzle. Not at all worth arguing about if that's what you want to do. I just feel blessed to have the rifle. Thanks for your time. Adios.