cover Hindenburg Crash Cover, 1937, cacheted Hindenburg crash flight card (picture post card depicting flowers) addressed to the Klee family in Brooklyn, N.Y., franked with Germany nos. 418, 421 and 426 (two), all tied by Hamburg 3.5.37 c.d.s., the 10pf stamp is additionally tied by a light strike of the indistinct violet flight cachet, the post card is partially charred along the left and bottom edges (not affecting any of the stamps or the address and is lacking only a small portion of the message), very fine, rare, remarkable state of preservation for one of these fragile crash covers, with 1983 P.F. certificate photo est.