1 Groschen carmine and 2 Groschen blue, both large shield in mixed franking with issue pennies, Michel number 33 a in the horizontal strip of three, on international letter to 30 g (2nd weight step), via route England to the United States to Petersburg, cancelled by single circle postmark "BERLIN P. E. 14 / 28 1 / 75 / 10-11 V", both breast shield stamps with clear embossment, perfect perforated, the strip of three the Michel number 33 a perforations error right through glued close to the margin, all stamps original affixed. the letter ran over the route England with the steamer "ABYSSINIA", on face brown red arrival postmark from New York, as well reverse black arrival cancel "RECEIVED 13. Febr. ", letter clean at the right side through cut opened, unsigned, detailed photo expertize Martin Wolfgang Sommer BPP (1998) "not frequent mixed franking the. 2. and 3. issue from DR