My best guess, Remington/Peters cira about late 60's early 70's, the 3 rings on the brass was old Peters style.
Paper or Plastic?
I would agree
That would look good for me . I'll crack it open one day if I get home with enough time and we'll see what's inside. I've got an old high brass purple papers shell of some kind and they feel similar. Google seems to come up with era from 20's to early 60's.
Its waxed paper and circa 1960's, the older paper shells were smooth not ribbed. If I remember correctly Remington had a patent of the paper ribbed case. I have a bunch of boxes put away. I have hundreds of them and have shot and reloaded 1000's of them over the years, especially when I was a kid my dad had many 1000's of them. I love loading paper shells, if they are in good shape they are a joy to load and smell the best on a nice cool morning hunt! Those surest when new came with a round piece of orange paper glued over the crimp with reddish purple wax, and it listed the charge weight and size of shot.
It's paper, just hold it over a candle real quick you will see the wax in the paper come to the surface. I have 8-9 new boxes of those put away, they have printed on the " REM Shurshot patented Ribbed Casing" or something to that affect. I used to take my paper cases that had gotten damp or were weathered and stand them on a cookie sheet and put them in the oven on low heat and it would bring the wax back to the surface and they where like brand new and would be a joy to reload and crimp even better.
