U.S. & Worldwide Stamps & Postal History; The David Mace Collection of U.S. Stamps
April 24-25, 2018
| Images | Description | Current Bid |
 | Lot #1584 RUSSIA Air Post 1933 Balloon, 5k ultramarine, horizontal pair, imperf. between, cancelled "Leningrad 1933", v.f., extremely rare, with 1988 Mikulski certificate (Zagorsky 341Pb) O Catalog #C37b | Price Realized $1,400.00 |
