Hi! Bought my first Thompson M1 (not A1). Really nice piece but I found some markings on the barrel and receiver I cannot decipher. I tried getting a few pics but the markings are tiny and I need to dig out my macro-lens for them. Receiver: just next to the "S" for Savage manufacture in front of the mag well there is a small "logo" and what looks like the number 80. They are tiny and I cannot make out what they say. Additionally: on the barrel, just below the muzzle are some small stamps as well and I cannot for the life of me figure out what they are. Like I said I will try to get macro-shots during the weekend but IF someone happens to know right away what they are I would be super curious. No re-build or arsenal stamps present on the SMG otherwise. The stamps have not gone through the finish, so the gun was parked (or similar) after application. So hardly original finish on this one.... Thanks!