Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 1
Thursday, February 2, 2023 at 4:00 PM UTC
Lot 90:
1934, Civil Aviation, trial color imperforated proof of 5k in brown with pale brown background, printed on watermarked Borders and Rosettes paper, full OG, NH, VF, Est. $800-$1,000, Scott #C40
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