I'd like to know the year of manufacture and grade of a 12 guage Remington model 11 semi-automatic five-shot shotgun, SN# 406xxx; Browning US Pats 689,283 - 710,094 - 730,870 - 812,326.
The gun is blued, with a Pheasant engraved on one side and a duck engraved on the other, with some factory...