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Auction: 20034 - The Doyen Collection
Lot: 1240

(x) Switzerland
1933-37 Air 20c. green and deep green block of four from the lower right corner of the sheet showing sheet number, variety imperforate, unmounted mint with the faintest tone spot to the top right margin. An extraordinary positional multiple and a key item from this issue. Zum. 4z. 1.09, CHF 58,000

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Sold for
£12,000

Starting price
£4200