"DYNEXEL Tested at 3200 FCI TST" gold and black sticker on tape reel. "11/24/71 S/A SUPP Fall 71 (11/19/71) copied from #139 267 BLKS" handwritten on a sticker. There is a GKI Certified sticker on the reel with certification numbers dated 11-28-71.
Manufacturer
International Business Machines Corporation (IBM); Scotch 3M