25 (21) 1920 50r on 1K orange Arms of Russia with provisional handstamp SG Type 4 in black, only 400 printed, unwmkd, imperf, four large margins, with BPA certificate, OG, LH SUPERB (Image)

...(Photo) Net Est $1,650.00

26 (22) 1920 50r on 2K yellow-green Arms of Russia with provisional handstamp SG Type 4 in red, only 300 printed, unwmkd, imperf, four huge margins, rare, with BPA certificate, OG, VLH SUPERB (Image)

...(Photo) Net Est $2,300.00

32 (28) 1920 50R on 15K blue and red-brown Arms of Russia with provisional handstamp surcharge SG Type 4, only 300 printed, perforated, ex-Roche, signed Brün, with RPSL certificate, OG, NH VF-S (Image)

...(Photo) Net Est $3,500.00