Black Surcharges on Soviet Issue. 1923, 100 mint stamps, including block of 8 with three tete-beche pairs, blocks of 24, 16 and 18, 16 imperforate stamps, double surcharge 15,000r/2000r (the only recorded), pair with offset on reverse, full OG, NH, LH/hinged, mostly VF, ex- Ashford, C.v. is about $1,200, Est. $400-$500 (Image)