Ink signature, “Herbert Hoover,” on an off-white 3.5 x 2.25 Stanford University card, and an ink signature, “Calvin Coolidge,” on an off-white 3 x 2 card. In fine condition, with a bit of light toning and a rusty paperclip mark to Coolidge’s card. Auction LOA John Reznikoff/PSA/DNA and R&R COA.
