1872 25c dull violet, h.r., well centered, v.f., cat. $525 (Cat No. 30) (Image)

Cat. $525, Est.$150

1891 1g gray violet, h.r., fresh and fine stamp, cat. $625 (Cat No. 50) (Image)

Cat. $625, Est.$150

1896 5g bronze green & red brown, h.r., well centered, v.f., cat. $700 (Cat No. 54) (Image)

Cat. $700, Est.$250

1946 Queen Wilhelmina, 1g-10g, five sets of four, l.h. or h.r., fresh, fine-v.f., cat. $1000 (Cat No. 278-281) (Image)

Cat. $1000, Est.$250

1946 Queen Wilhelmina, 1g-10g, six sets of four, l.h. or h.r., fresh, fine-v.f., cat. $1200 (Cat No. 278-281) (Image)

Cat. $1200, Est.$300

1949 Queen Juliana, 1gld-10gld, five sets of four, l.h. or h.r., fresh, fine-v.f., cat. $2000 (Cat No. 319-322) (Image)

Cat. $2000, Est.$500

1949 Queen Juliana, 1gld-10gld, five sets of four, l.h. or h.r., fresh, fine-v.f., cat. $2000 (Cat No. 319-322) (Image)

Cat. $2000, Est.$500

1949 Queen Juliana, 1g-10g, five sets of four, l.h. or h.r., fresh and fine-v.f., cat. $2000 (Cat No. 319-322) (Image)

Cat. $2000, Est.$500

1949 Queen Juliana, 1g-10g, five sets of four, l.h. or h.r., fresh and fine-v.f. (NVPH 534-537) cat. $2000 (Cat No. 319-322) (Image)

Cat. $2000, Est.$500

1931 DoX card from Amsterdam to Canary Islands, with appropriate cachet and Puerto de La Luz arrival pmk, v.f. (Image)

Est.$150

1877-1903 25c black and lilac, unused with original gum, l.h., v.f., with Calves certificate, cat. €2200 (Cat No. YT 7) (Image)

Cat. €2200, Est.$1,000

1877-1903 1gld red and lilac, unused with original gum, h.r., v.f., signed Calves, cat. €1400 (Cat No. YT 11) (Image)

Cat. €1400, Est.$750

1930-33 collection of 58 covers or cards, virtually all different (occasionally cover and card from the same flight), many identified by both Sieger and Michel catalogues, with better flights noted, mostly v.f. An unusual opportunity to obtain a comprehensive collection of Netherlands Zeppelin covers (Image)

Est.$5,000