1920 5m yellow, black and light green, variety "Damaged Plane" (position 50), used with additional franking on registered cover from Tallinn, via Helsinki to Lund, Finland, with arrival pmk on back. A fine and scarce usage of this printing flaw on cover (Cat No. C1var) (Image)

Est.US$500

1923 overprinted "1923" on 5m, also surcharged 10m on 5m+5m, gutter blocks of 16 and 8 respectively, each showing various plate flaws and distance varieties, many stamps n.h., folded in gutters, fine-v.f. (Cat No. C2,4) (Image)

Est.US$500

1923 overprinted "1923" single, also surcharged 20m on 5m+5m and 45m on 5m+5m pairs, each showing white spot below "P" of "Post", constant variety R-43, v.f., scarce (Cat No. C2,5,6var) (Image)

Est.US$500

1923 surcharged 15m on 5m+5m in red and 10m on 5m+5m, used, each showing white spot below "P" of "Post", constant variety R-43, v.f., scarce (Cat No. C3,4var) (Image)

Est.US$500

1923 10m on 5m+5m (positions 87/90, 97/100) and 20m on 5m+5m (positions 81/84, 91/94), right sheet margin blocks of four, l.h. or n.h., fine-v.f., rough perforations (made by "Paevaleht" newspaper for the Aeronaut Company), first one signed Teetsov (director in both companies), the latter signed Stolow and Gleason, with 1977 Philatelic Foundation Certificates. Wonderful Air Post and Estonian rarities (Mi.43A,44A, Euro 8,000, for hinged singles) (Cat No. C7-8) (Image)

Est.US$5,000

1923 10m on 5m+5m (positions R97/98) Teetsov perforations and 20m on 5m+5m (positions L7/8) Aeronaut perforations, used with additional franking on flown cover from Tallinn (28 November, 1923) to Helsinki, with arrival pmks on back, filing fold away from the stamps, fine cover addressed to Juri Ots (an Aeronaut pilot), only about 15 known, signed Gleason (Cat No. C7-8) (Image)

Est.US$2,500

1923 10m and 20m surcharges, each private "Kreopas" perforations (between 11 1/4 and 11 1/2), used with additional franking on registered, flown (V.Kreopas) cover from Tallinn, 21.10.24 to Helsinki, v.f., with arrival pmk. V.Kreopas was a Tallinn stamp dealer (Cat No. C7-8) (Image)

Est.US$250

1923 10m, private "Kreopas" perforations (between 11 1/4 and 11 1/2), used with additional franking on both sides of registered, flown (V.Kreopas) cover from Tallinn, 17.10.24 to Helsinki, v.f., with arrival pmk (Cat No. C7) (Image)

Est.US$250

1925 Triangles, 100 sets (two sets of sheets of 50), n.h., fine-v.f. (Mi.48-52A, Euro 1,000) cat. $1200 (Cat No. C14-18) (Image)

Cat. $1200, Est.US$250