Thanks. Looking at Google AI it had this to say:
The Super-X / Super Speed Connection: Winchester introduced the Super-X brand in the 1920s as a high-velocity, hard-hitting game load. Pairing Super-X powder performance with Staynless non-corrosive priming made these shells immensely popular for waterfowl and upland hunting because they protected valuable shotgun bores.
The "Staynless" Innovation: Introduced by Winchester in the late 1920s and heavily marketed through the 1930s and 1940s, "Staynless" was the trademarked name for Winchester's non-corrosive, mercury-free priming compound. Before this, primers used chemicals that left behind corrosive salts, rusting shotgun barrels if they weren't cleaned immediately.
Physical Construction: Shotshells from this specific "Staynless" era feature rolled paper hulls (often red or yellow, coated in wax for waterproofing) and a high brass base. They predate the modern plastic hulls that Winchester introduced in the 1960s..
So no real way to tell the age of the box - which I always liked because of its dovetailed sides and burned in lettering. It could be anywhere from 100 to 50 years old - perhaps the clasps might tell the story. I'm assuming the "3" indicates 3" shells, which seem to have been standard? At least it has a purpose now.
Last edited by Argo44; 08/29/26 09:34 PM.
