U.S., Envelope, 1920, 2¢ on 2¢ Carmine on Blue, Die 6, Surcharge Type 3, #U453B, mint entire, size 10, knife 58, watermark 19, deep rich color, Very Fine. 2017 UPSS #2815 $3,000. Scott $2,250. Rarely seen . Estimate $600-800.
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