Thanks for the replies, everybody! fdwjr, my gun looks just like your original Model 20, unrestored. I am going to give it a fine detailed cleaning this weekend. It should be a fun gun. I actually bought it for my daughter. She saw how giddy I was with my Parker and Baker hammer guns, so I thought I would try and get her hooked, too. I will get back with serial and other markings. Cheers!

GMC(SW) - USN, Retired (1978-2001)