Vintage matte-finish 2.5 x 3.5 photo affixed to a 4.5 x 7 mount with a printed message of thanks related to Planck’s eightieth birthday, signed and inscribed on the mount by Planck with a sentiment in German and dated May 28, 1938. In impressively crisp, very fine condition. COA John Reznikoff/PSA/DNA and R&R COA.
