2 1/2 on 2 1/2 Gr. red-brown with clearly double embossing, the 1. embossing is approximate 2 mm left above shifted, with horseshoe cancel "Hamburg 20 April 75" (Spalink (17 / 8), at the bottom on the right tear, otherwise in perfect condition, Register-no. 516, photo expertize Sommer BPP, Michel 1200,-