"BERLIN POST-EXP. 7.30 1 67" - violet framed cancel of 3 lines, KBHW 295 c, on letter piece 3 Sgr. Coat of arms. The use from violet endorsing ink is from the time from 30.01.1867 to 08.02.1867 known. In accordance with use of data in the KBHW handbook, is a the earliest use violet endorsing ink at all Berlin Post offices! Expertized Berger IV and Brettl BPP