Switzerland . 1913, Burgdorf-Bern semi-official airmail,. on Nationale-Flugspende event postcard, used in combination with 5c William Tell, postmarked with violet flight c.d.s. (30 March), small stain to semi-official and hinge marks to card from prior mounting, else a fine and scarce card. (Zumstein IV, CAT CHF1,200). Cover (Image1)

Est. US$200-300

Switzerland . 1913, 50c Schweizerische Nationale Flugspende Bern Aviation Meet. semi-official airmail, never hinged, beautifully-centered amidst balanced margins, exceptionally fresh, very fine; with 1991 Rellstab certificate. (SBK III, CHF 700). Mint NH (Image1)

Est. US$200-300

Switzerland . 1913, 50c Schweizerische Nationale Flugspende Herisau Aviation Meet. semi-official airmail, never hinged, a bright and fresh example, well-centered and choice, very fine. (SBK V, 600CHF). Mint NH (Image1)

Est. US$200-300

Switzerland . 1913, 50c Flugpost Laufen semi-official airmail,. Type IV, never hinged, fresh, issued on occasion of the airmail flight from Lauren to Solothurn on 28 September, 1913, very fine; handstamped Vugniaux and accompanied by his certificate. (SBK VII, 900CHF). Mint NH (Image1)

Est. US$300-400

Switzerland . 1913, 50c Journée Valaisanne d'Aviation semi-official airmail. never hinged, depicting a monoplane in flight, fresh bright colour, superbly-centered, a choice example of this scarce stamp, extremely fine; with 1992 Renggli certificate. (SBK Xa, 1,500CHF). Mint NH (Image1)

Est. US$500-750

Switzerland . 1934, NABA souvenir sheet,. never hinged, fresh, issued on occasion of the Swiss National Philatelic Exhibition at Zurich, very fine. (Sc. 226, $700). Mint NH (Image1)

Est. US$150-200

Stamp Collections & Balances . Switzerland mint & used group of better,. most on auction cards from 1960s sales, a couple small folder lots of Officials on album pages, as well as better singles and sets, including (mint unless otherwise noted) Sc. 226 (two examples, hinged), 242, 304-5 (used), B178 (mint and used), C1, C2 (used), C13-14 (used), 1O1-16, 3O83-93, 4O1-21 (used), 4O29-39 (2), 5O1-25, 6O1-8 (3), 7O1-20, and more, a useful group with several desirable items, chiefly fine-very fine (Image1)

Est. US$500-750