1906 10c scarlet, two souvenir sheets of 10, distinct shades, h.r., fine-v.f., cat. $900 (Cat No. 82a) (Image)

Cat. $900, Est.$250

1923 10fr deep green, single from the souvenir sheet, n.h. (usual gum), fine (YT 140) cat. €1000 (Cat No. 151) (Image)

Cat. €1000, Est.$200

1926-35 Grand Duchess Charlotte, 5c-1 1/4fr yellow, 23 different bottom sheet margin blocks of four, each stamp with security punch and overprinted Specimen in red, n.h., fine-v.f. (Cat No. 159/181S) (Image)

Est.$500

1950 Grand Duchess Charlotte, 5c-3 1/2fr, nine different blocks of four, each stamp with security punch and overprinted Specimen in red, n.h., fine-v.f. (Image)

Est.$250

1950 Grand Duchess Charlotte, 5c-3 1/2fr, eleven different blocks of four, plate proofs on card, 5c and 50c green discolored, others fresh, v.f., rare (Image)

Est.$500

1939 (30 Mar) mixed franking with German adhesive, cover from Trier, via Luxembourg City to Canary Islands, first flight of the "Seeadler" aircraft, with appropriate cachet and arrival pmk (Image)

Est.$150

1937-39 three registered and flown covers, each franked with set of six, first one used in combination with 50c Belgium and sent to Berlin, others to New York, fine-v.f. (Image)

Est.$150