Self-addressed mailing envelope completely in Einstein’s hand, 6.25 x 4, addressed in Einstein’s hand to “Herr und Frau A. Einstein,” with Einstein completing the German mailing address underneath. Envelope bears a March 24, 1930, Berlin postmark to top right. In fine condition, with small tear to top edge, some light creasing and handling wear, and postmark lightly over beginning line of address. RRAuction COA.
