This is 30-06 ammo. Stamped "U 43" . The steel can it came sealed in was labeled "repackaged 50 HAW". I'm assuming it was repackaged in Hawthorne Nevada in 1950, but a friend was telling me this may be collectible and worth something. I don't see it, as it was said to have corrosive primers. I won it at a local military rifle shoot. What say you guys in the know?