U.S. & Worldwide; The Alexander Collection of Russia
September 14-16, 2010
| Images | Description | Current Bid |
 | Lot #235 BOLIVIA Air Post 1924 10c vermilion & black, center inverted, block of six, well centered, never hinged, fresh and v.f., with certificate. Only 50 examples of inverted center were printed, this being the only recorded block of any size, ex-Ortiz Patino collection (YT 124a, catalogue value for hinged singles)  **Catalog #C1a Catalog Value € 27,000 | Unsold |
