| Images | Description | Current Bid |
 | Lot #431 SOVIET UNION 1938 Transpolar Flight 1938 First Transpolar Flight, 10k blue black & red, also 10k brown violet & red, two different trial color proofs, ungummed and perf. 11, v.f., extremely scarce P Catalog #497P | Price Realized $27,000.00 |
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