Bob,
Did you order that gun new? Does it have 3 chambers? Circa 1978 I used my accumulated worm digging/cricket catching/snow shoveling money to become the proud owner of a new Remington 1100 from my local Woolworths store. The guy behind the counter let me look at all the guns in stock to find one with wood I liked.
It was a great day.
I remember a few doubles in the rack, but, my 17 year old brain was hyper focused on the task at hand, and mostly incoherent to anything else. I dont recall if the doubles were new, or, used, but, I lean toward new because they had few used guns in the rack, and the doubles were lined up all in a row in the back.
Alas, the Remington was only around for about 5 years, at which point I sent it down the road to help fund a different gun, a used Ruger Red Label 20 gauge, another gun no longer around.
I do wish I knew what doubles had been in the rack that day. Best guess from here is Spanish guns.

Best,
Ted