Here is the info I found on my Shotgun. I have pics of the scratches on the butt of the gun. The rest looks in perfect condition. Please see below.
Remington introduced a new stock "cut checkering" pattern and receiver scroll marking on all Model 1100 Field, Magnum, Skeet and Trap models. Model 1100 12 gauge 3" magnum shotguns were adapted to function with extra barrels chambered for 2 shells. Also in 1979, Remington introduced Model 1100 Tournament Grade Trap guns with 30" full or modified trap barrels; and new Model 1100 Tournament Skeet guns in 12, LT-10, 28 and 410 gauge versions. New guns featured select walnut stocks with the new cut-checkering pattern. Remington also introduced Model 1100 TA Trap 1976 Remington Company Catalog guns with regular grade stocks, as distinguished from Tournament Grade Trap guns , are introduced in both left and righthand versions. Model 1100 TB Trap guns were discontinued in this year.