U.S. & Worldwide
November 9-11, 2010
| Images | Description | Current Bid |
| Lot #1636 SIBERIA 1921 20k on 3 1/2r maroon & green, imperforate block of four, lower left stamp with inverted surcharge, h.r., with some adhesions and gum toning, handstamped markings on back, signed Papadopulo, Buchsbayew, one of only 2-3 known (Liapine cat. Euro 5,900+ for pair and two singles)  *Catalog #71,71var | Unsold |
