Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1

United States - Modern Errors and Varieties

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Start price: $400

Buyer's premium:

1960, Water Conservation, 4c dark blue, brown orange and green, complete pane of 50 (5×10), double paper variety on the 1st (completely) and 2nd (partially) vertical rows, full OG, NH, VF and rare multiple, Est. $800-$1,000, Scott #1150, var