1921 35c red, three copies, one with period after "1921," used on separate flown covers to Halifax, fine-v.f., cat. $625 (Cat No. C3,3b) (Image)

Cat. $625, Est.$200

1933 $4.50 General Balbo surcharged adhesive, l.h., v.f., signed Bolaffi, cat. $325 (Cat No. C18) (Image)

Cat. $325, Est.$150

1933 $4.50 General Balbo surcharged adhesive, block of four (complete setting), l.h., v.f., signed Bolaffi, cat. $1300 (Cat No. C18) (Image)

Cat. $1300, Est.$500

1933 $4.50 General Balbo surcharged adhesive, used on flown cover from St. John's (26 July 33) via Shoal Harbor to London, with appropriate cachet and Rome arrival pmk on back, v.f., signed Bolaffi, cat. $800 (Cat No. C18) (Image)

Cat. $800, Est.$250

1933 Balbo Flight Surcharge, $4.50 on 75c yellow brown, partially doubled surcharge, clearly visible in the numbers of the date and value (partial offset of the surcharge on reverse as well), position 1 of the setting and the only one recorded unused (there was an example used on cover in the Cyril Harmer collection), small surface mark at left (seems to be from the surcharging process), very fine in all respects, 2010 BPA certificate (Unitrade C18iii, listed but unpriced) (Cat No. C18var) (Image)

Est.$25,000