1919, The small 50r. surcharge on Arms Type, 50r. on 3k. red perforated with inverted overprint, unused, few minor shortened perfs of absolutely no importance, am extremely rare variety, signed Jem, Semion Dobrzhitzky and Holcombe with certificate (1994) and certificate BPA (1999)
depicted in "BATUM UNDER OCCUPATION the years 1917 – 1921", page 100 (by Hans G. Grigoleit & Edward Klempka)
