Pretty close. '57.

I keep stuff pretty much forever. These bullets were given to me by a guy who reloaded his own pistol rounds. He knew I wanted to try some 44 cal. bullets back when sabots were relatively new to the MZ scene. Probably closer to 20 years ago. I shoved one with great effort down my 1:66 CVA back then and frankly, was scared to shoot 'em. Had them ever since.