RUSSIAN POST OFFICES IN SINKIANG: KULDJA: 1918, Coat of arms 25k and 1 r. as vertical pair and 3.50 rbl single stamp tied by cds. "KULDJA 4 6 18" to reverse of insured letter over 500 R. to Tientsin, one 1 rbl. and 3.50 rbl stamp torn, otherwise fine, rare cover