Auction 90, Session 2 - Worldwide Rare Stamps and Postal History
Lot 1225:
1918, violet overprint (type 1) on 14k blue and carmine, printed on vertically laid paper instead of wove paper, block of four, full OG, NH or hinged (top stamps), VF and very rare multiple, expertized by C. Svenson, sheet positions provided, ex-Dr. Zelonka, C.v. $1,000 as hinged singles, Est. $500-$600, Bulat #21a
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