"BERLIN MAIL EXP.23", blue K1, KBHW 487 b, on cover three times 1 Sgr. in 1866 to Kaldenkirchen, on official matter package covering letter in 1868 to new Ruppin as well as black K1 (KBHW 487 ares) on cover 1 Gr. in 1870 to open woods