50 H. "stamp exhibition Kaschau" with hand stamp overprint "1. X. 1938 swastika", neat cancelled with first day cancel "Karlovy Vary 1 x 4 d -1. X. 38-14" on piece, issued only 452 pieces, with first day cancel rare, photo expertize Brunel VP (2017) : "the condition is perfect. ", Michel 300.-