If you remove the forearm and look at the underside of the barrel, you should see the same serial # . . . photos would help.
Are you a member of SSS? If not, I will lock your post until you send me your email address before I can activate your membership. All you have to do is shoot me an email to fsgrand2@fairpoint.net.
I will check on your serial # just the same.
Two Flints