1768 (16 Mar) outer FL from Riga to Pernau, with straight-line framed "Riga" handstamp, with departure and arrival (the next day) docketing, fine and scarce early strike. The framed postmark of Riga in Latin letters was introduced in 1767 and continued in use only for one year (Dobin 01/0.001, rarity factor "6") (Image)

Est.$500

1838-39 two FLs, one from "Post-Hilgensfer" (sent 3 Jan.38) to Ubbernorm, the other from "Post-Stackeln" (1 Nov.39) to Terickaten, all in the Lifland gouv., with clear markings, red wax seals, dates inserted by hand, fine and rare pair of covers, neatly written-up on exhibition page and stated "the earliest recorded date of postmark" for each (Image)

Est.$500

1859-61 three outer FL to Riga, each franked with Russia 10k brown & blue (perf. 12 1/2), with rectangular numeral dot cancels of "389" (Walk), "391" (Werro) and "392" (Wolmar), showing departure and arrival markings on back, fine and impressive trio (Image)

Est.$250

1860 (26 Mar) FL franked with Russia 10k brown & blue (perf. 12 1/2) tied by "39" numeral in dotted hexagons with pointed sides, with "LEMZAL" departure and Wolmar arrival markings on back, rare usage from Lemzal (today Limbazi in Latvia) (Image)

Est.$150

1867 (Sep) outer FL franked with Russia 10k brown & blue (horizontally laid paper), tied by a well struck "841" numeral in truncated triangle of dots, with corresponding framed "St (ation) Didrikyul" departure (dates filled in by hand), addressed to Riga, with arrival pmk, rare (Image)

Est.$150

1871 Russia 10k stationery entire envelope, indicia at left, canceled "405" in truncated triangle of dots, addressed to Wollmar, with oval "POST-ROOP 18" (date filled in by hand), departure pmk on back, wax seal removed, fine and rare cancel (Image)

Est.$150

1919 three registered and locally used lettersheets, franked with RSFSR 35k (12) and 70k, two supplemented with Imperial franking, fine-v.f. (Image)

Est.$150

1923 Coat of Arms, 5s, 15s, 25s and 30s imperforate se-tenant sheetlet of four in yellow green, wavy lines watermark, v.f. and rare, one of only five (!) recorded (Cat No. 116,120,122,123P) (Image)

Est.$2,500

1923 Coat of Arms, 5L+10L carmine, imperforate vertical pair, proof sheetlet on watermarked paper with color markings at bottom, v.f., rare, one of only five (!) recorded (Cat No. 130-31P) (Image)

Est.$2,500

1934 20s deep rose, block of four, upper left showing "5.V.1934" plate variety, l.h., v.f. (Cat No. 177var) (Image)

Est.$250

1938 two unexploded 2,02 Ls booklets, one with 18 November 1938 cancel on front cover, v.f. (Image)

Est.$300

1938 3s brown orange, two vertical pairs, each variety imperf. at bottom, different shades, fine-v.f. (Cat No. 200var) (Image)

Est.$250

1939 20s dark carmine rose, lower right sheet corner margin vertical pair, top stamp with plate flaw, imperf. at bottom, n.h., v.f. (Cat No. 210var) (Image)

Est.$200

1933 Latvia-Africa flight, set of five, overall gum toning, last one n.h., all signed Mikulski, cat. $520 (Cat No. C9-13) (Image)

Cat. $520, Est.$150

1933 Latvia-Africa overprints, three different, tied by 29 May cds on registered cover from Riga to Kaunas, v.f., with arrival pmk (Cat No. C9-11) (Image)

Est.$250

1932 imperforate singles, complete set of five used in 1937 on registered cover, flown from Riga to Germany, filing fold away from the stamps, part of backflap missing, otherwise fine-v.f., with arrival pmk (Cat No. CB9-13) (Image)

Est.$150

1933 Issue, complete set of four used with additional franking (on back) on registered and flown cover from Riga (13 July) to Locarno, Switzerland, fine-v.f., with arrival pmk (Cat No. CB21-24) (Image)

Est.$250

1933 Airships, perforated set of four, used in 1937 on registered, flown cover from Riga to Switzerland, v.f., with Kreuzlingen arrival pmk (Cat No. CB21-24) (Image)

Est.$250

1933 Riga to "Columbus", cover addressed to New York, with Berlin transit markings, fine-v.f. (Image)

Est.$350

1932 incoming registered cover from Bulawayo, Southern Rhodesia, first official flight (Jan 25) to Libau, with arrival (18 Feb) on back, fine and undoubtedly scarce flight (via London and Berlin) (Image)

Est.$200

1920 Railway newspaper stamps 5s carmine, 10s brown, 15s lilac and 50s green, four imperforate archive proofs without gum as issued v.f., rare (Image)

Est.$1,200

1920 Red Cross, imperforate archival proofs in orange, background and bottom tablets blank, v.f., signed Rucins (Cat No. B1-4P) (Image)

Est.$350

1929 Meuerovics, pairs imperf. between, four different, first one vertical, others horizontal, l.h., v.f. (Cat No. B46-47,50var) (Image)

Est.$800

1933 3rd SAF to Brazil, attractively franked, with Berlin forwarding cachet, minor adhesive toning and cover wrinkles, otherwise fine-v.f., with additional "Via Condor-Zeppelin" handstamp on back (Image)

Est.$250