Hmmm . . . something's not adding up here. Just to be sure (and please don't take offense), here's a photo of where the model number should appear (this particular gun is a Model 10-14):
Yours really has nothing stamped there?
ETA: Hang on, that photo's not terribly helpful. I'll try to resize it and repost.
ETA(2): No luck on the resizing, not enough resolution. Head on over to this thread at The High Road:
http://www.thehighroad.org/showthrea...=397027&page=2
and scroll down to Post #32, that's where I got the photo.