"220" (Haferkamp type 13, valuation 150 points) together with framed cancel of 3 lines "Frankfurt A. M. / POSTEXPED. No 4 / 26 4 67" (Paulsplatz) on postal union cover 9 Kr. V. issue to Cologne, complete letter contents. Documents with this Stamp combination are rare. Photo expertize Sem BPP "perfect"