France. 1928 "Ile de France" 10f. on Berthelot 90c. rose-carmine and 10f. on Pasteur 1f.50 blue, very lightly hinged, pencilled or handstamped signatures on the reverse; fine and rare. S.G. 464-465, £18,500, Spink Maury €16,200 (Image1)

Est. £1,500-2,000

France. 1929-33 Tourist Issue. 10f. "Port de la Rochelle" bright ultramarine, special printing, mint, fine and rare. Signed Brun. S.G. 474ba, £18,000. Spink Maury 261A €22.500 (Image1)

Est. £6,000-8,000

France. 1929-33 Tourist Issue. 10f. "Port de la Rochelle" brown, special printing, original gum, two handstamps on reverse, fine and rare. Spink Maury 261B, €6,000 (Image1)

Est. £1,000-1,200

France. 1929-33 Tourist Issue. 10f. "Port de la Rochelle" special printing in black-brown with margin at top, original gum, fine and rare. Spink Maury 261C, €6,000 (Image1)

Est. £1,000-1,200

France. 1929-33 Tourist Issue. 10f. "Port de la Rochelle" special printing imperforate in black-brown from the lower right corner of the sheet, original gum, fine. Spink Maury €5,000 (Image1)

Est. £800-1,000

France. 1929-33 Tourist Issue. 10f. "Port de la Rochelle" special printing imperforate in brown with margin at top, pencilled and handstamped signatures on the reverse, fine. Spink Maury €5,000 (Image1)

Est. £800-1,000

France. 1929-33 Tourist Issue. 20f. bright red-brown "Pont du Gard" perforation 11 block of four, unmounted mint, superb and rare. S.G. 475a, £5,600+, Spink Maury 262A, €9,800+ (Image1)

Est. £2,000-2,500

France. 1935 Breton River Scene 2f. slate instead of blue-green, a horizontal pair from the upper left corner of the sheet, unmounted mint, slightly toned gum, otherwise fine. An exceptional rarity. Pencilled and handstamp signatures on the reverse. J-F Brun Certificate (2002). S.G. 525, £18,000+, Spink Maury 301a, €22,000+ (Image1)

Est. £2,000-2,500

France. 1936 Paris Exhibition 50c. carmine instead of orange, margin at left, unmounted mint. Superb and rare. R.P.S. Certificate (2000). S.G. 558a, £15,000. Spink Maury 325a, €14,000 (Image1)

Est. £1,500-2,000

France. 1937 Mermoz 30c. yellow-green instead of dark grey-green, unmounted mint; small gum stain though still a fine example of this rare stamp. S.G. 570a, £13,000, Spink Maury 337a, €12,500 (Image1)

Est. £1,000-1,200

France. 1939 unissued Red Cross 90c. + 35c. with frame printed in ultramarine, a top right corner example hinged in the margin only; lightly gum toned, a few split perfs. and a tiny fault in the margin not affecting the adhesive. Only one sheet of 25 printed. S.G. 634a, £16,000, Spink Maury 422A, €22,500 (Image1)

Est. £2,000-2,500

France. French Southern and Antarctic Territories. 1969 unissued Air Concorde error of value 87f. blue and deep blue, unmounted mint, fine. A rare and popular modern error. Calves Certificate (1983). Yvert 19a (Image1)

Est. £1,500-2,000