Booklets of the World; U.S. and Worldwide; Russia
April 6-7, 2011 and April 11-12, 2011
| Images | Description | Current Bid |
 | Lot #1158 BULGARIA Air Post 1987 25s Balkan Airfleet, blue gray omitted and entire engraved portion of design omitted, upper right sheet margin single, cancelled to order, v.f. Only one sheet of 25 discovered O Catalog #C161var | Unsold |
