In rough shape, but this wickedly-rare one's always my go-to card in these types of threads.
1967 Laughlin World Series #61, and most importantly,
with address on back...
1967laughlin61mantleBEFORE.jpg
• That cross crease is interesting, because it's at the height that a standard Topps card would've reached. My hypothesis is some kid(?) wanted this Mantle to conform to the size of his other cards, so he bent it accordingly as it sat on top or bottom of his stack (and then put the whole pile in his back pocket?). Seems logical.