KARF, 15 Pfg dark violet, 20 Pfg blue Numeral issue 1920, 5 Pfg on 20 Pfg blue overprint Type IV a, 10 Pfg on 20 Pfg blue overprint Type I a two examples provisional issue 1920 on registered letter to Sachsendorf, single-circle KARF 24 4 20 (OBERSCHL.) a (OS handbook No. 138.1), very neat strikes, arrival (26.4.1920) on reverse, age and use marks typical of period