Lot 31003 – 1933 (May 20) Once-in-a-lifetime offering of the c

1933 (May 20) Once-in-a-lifetime offering of the complete set of 40 Crociera Nord Atlantica airmail covers neatly written up on album pages, with single frankings of both values for every pilot’s overprint, all of which are signed by the flight crew with the special cachet and all the transits adjacent, all certified by Colla (2001), signed G. Bolaffi and A. Bolaffi, a unique and unrepeatable offering of these highly collectable airmails, suitable for the investor or advanced airmail collector (Sass. €400’000++) Estimate: € 250’000 – €300’000