"BERLIN 23/6 70" - black Grotek-K1, KBHW 8 b, ( at the NDP time valuation L.P. if specialists valuation =, addressee address, first use day of these cancel, clear, preprinted together with red kidney Ra1 "expenses" on from valued mail advance cover to KBHW to Emden (arrival postmark), back seal wafer "ROYALLY PRUSSIAN STATE INDICATOR" without top flap, is listed only at particularly rare cancel documents )