SWITZERLAND - 1938, Superb corner marginal “PRO AERO” overprint block of four N.H. has been folded once vertically, which does not detract from the Exceptional rarity of this Swiss Air philately. Cert, Raybaudi. Zumstein F26, catalog value CFH 90,000 Photo. Est. 25,000 - 30,000 CHF Lot condition
** Dealer
Harmers SA Auction
Starting Price:
25000.00 CHF
(app. 20466 EUR) (via Philasearch.com - Switzerland)
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