need help with 1921 chamber stamp

[kurusu]

Originally Posted by Bob B

Thanks for all your help...the serial # is four digits, no letters, listed on the bottom of the barrel and the front and side of the reciever....the bore code is 883 and is listed beneath the ser# on the barrel

883 is not a code. You're missing a comma. It should be 8,83. And it's the bore measure in mm.