Actually they're branded Peters, not Remington and in blue paper hulls. Years ago I had multiple boxes of Peters 20 gauge shells from the 1950s. Shot up a box on our trap range one morning and riled up a guy who collects old ammo, when he saw the empty hulls in the grass.
Got all the ammo, when I bought all the firearms from an old boy back in the 1980s. Still have a box of his Winchester 12ga paper shells.
