came across a beautifull shotgun. double barrel side by side and appears to be a 20 ga. Says Remington arms on the receiver and has a 6 digit

serial number on the trigger guard but Remington has 2 letters on the left side of the barrel to go along with the numbers. This gun does not have those letters. I have to clean up this gun but I can barely make out some letters on the center of the barrel where it is knurled. any ideas out there?

if you have any suggestions please email me at [email protected]

Thank you.