1857 10k brown & blue imperforate horizontal pair, thin paper, canceled by pen and boxed "Revel 21 May 1858" datestamp, margins all around, fresh and v.f. pair (Cat No. 1) (Image)

Est.$2,500

1857 10k brown & blue, margins all around, tied by "37" in circle of dots on complete FL from Reval to Dorpat, with boxed "Reval 6 August 1858" departure and indistinct arrival markings on back, little overall toning, of no importance, v.f. and attractive from Reval to Dorpat, with Eichele certificate (Cat No. 1) (Image)

Est.$5,000

1857 10k brown and blue, ample margins, just clear at bottom, canceled by pen on small outer FL from Frauenburg to Riga, with framed departure datestamp (actual date filled-in by pen) on reverse, fine usage from present-day Saldus in Latvia (Cat No. 1) (Image)

Est.$1,000

1857 10k brown & blue, margins all around, beautiful color and relief, tied by boxed Odessa, 4 April 1858 datestamp on outer FL to St. Petersburg, usual filing fold away from the stamp, fresh and splendid Russia Number One (Cat No. 1) (Image)

Est.$4,500

1857 10k brown & blue, large margins all around, tied by "19" in circle of dots on outer FL from Kowno to Warsaw, with pre-philatelic "Kowno Aug 15 1858" double circle departure and red Warszawa 30/8 arrival postmarks on back, lettersheet refolded, with filing creases away from the stamp, fine and attractive Number One on cover from present day Kaunas in Lithuania to Warszawa in Poland (Cat No. 1) (Image)

Est.$7,500

1858 20k blue & orange, thin paper, tied by "22" in circle of dots on envelope to Moscow, with unframed straight line "Kishinev" pre-philatelic departure handstamp and boxed "Polucheno 11 September 1858" arrival datestamp on back, wax seal removed, with filing fold away from the stamp, which is slightly rubbed at top, cover has been cleaned with remaining stain at upper right, fine and rare number three on cover from Kishinev to Moscow, ex-Frederick Small collection, cat. $13500 (Cat No. 3) (Image)

Cat. $13500, Est.$7,500

1858 20k lilac and green, perforated and gummed trial color proof without watermark, h.r., fresh and v.f., signed Mikulski, etc. (Cat No. 3P) (Image)

Est.$750

1858 30k carmine & green, thick paper, cancelled "39" in circle of dots (Ryazan), well centered. Color slightly washed out, still v.f., signed Friedl, Dr.Ferchenbauer, etc., with 2015 Buchsbayew certificate, cat. $2750 (Cat No. 4) (Image)

Cat. $2750, Est.$1,000

1858 30k carmine & green, thick paper, cancelled "54" in circle of dots, intact perforations, small faults, fine appearance, signed Mikulski, cat. $2750 (Cat No. 4) (Image)

Cat. $2750, Est.$500

1865 Unwatermarked, perf. 14 1/2, 1k black & yellow, 3k black & green, 5k black & lilac, 10k brown & blue, 20k blue & orange, 30k carmine & green, the complete set of six on thick paper, unused, large part original gum, h.r., brilliant original colors, fine and rare set, cat. $7075 (Cat No. 12-18a) (Image)

Cat. $7075, Est.$3,500

1866 1k-30k Horizontally Laid paper, top value n.h., others l.h. or h.r., fresh, fine-v.f. (Cat No. 19-25) (Image)

Est.$150

1866-70 1k-30k (horizontally laid paper), complete set of six, n.h., post office fresh, fine-v.f., cat. $816 (Cat No. 19-25) (Image)

Cat. $816, Est.$350

1866 3k green & black, "V" in background error, unused, part original gum, h.r., fine, cat. $1000 (Cat No. 20d) (Image)

Cat. $1000, Est.$300

1866 perforated and gummed trial color proofs on watermarked stamp paper, 5k green (tiny abrasions), magenta, orange, carmine and blue, the complete set of five, h.r., fresh, fine-v.f., signed Mikulski, with his 1989 certificate (Cat No. 22P) (Image)

Est.$1,000

1874 (26 June), small cover franked on back with 2x10k brown & blue, cancelled by straight-line "St. Mogletsy Novg. 27 June 1870" datestamps, addressed to France, with 28 June transit cds, fine and very scarce usage (Image)

Est.$150

1909 20k dull blue & dark carmine, groundwork omitted, upper left sheet corner margin block of four, n.h., v.f., cat. $340 (Cat No. 82b) (Image)

Cat. $340, Est.$150

1909 St. Petersburg, unexploded 80k booklet, gray green covers with black inscriptions, with five panes of six incl. 3x1k, 3k and 7k with face value of 78k, minute staple rust, still unusually fresh and v.f. complete booklet (Image)

Est.$4,500

1909 Tsar Nicholas II, perforated Mouchon essay in gray black, value tablet and inscriptions blank at bottom, v.f., rare (Image)

Est.$3,000

1913 Romanov Tercentenary, 2k green die proof on glazed card, v.f. (Cat No. 89P) (Image)

Est.$500

1917 1r imperforate sheet of 50, center double, n.h., fine-v.f. and spectacular item (Cat No. 131c) (Image)

Est.$1,000

1918 Chainbreakers, 14k carmine, typographed die proof on gummed paper, l.h., v.f., signed Mikulski, with 2005 Mandrovski certificate (Image)

Est.$7,500

1918 15k orange, perforated and gummed sheetlet with vertical lozenges, side ornaments unfinished, fresh, v.f. (Image)

Est.$7,500

1918 "1 March 1917" unissued design 10k+5k blue, imperforate die proof on wove paper, v.f., extremely rare (Image)

Est.$10,000

1921 definitives, 250r dull violet, pelure paper, triple impression, h.r., v.f., rare (Cat No. 186c,var) (Image)

Est.$250

1922 (May), pre-printed ARA card, filed in Odessa and mailed from the processing center in Moscow to USA, franked with 4x25k Postal Savings Stamps and surcharged 5,000r on 2r surcharge, fine (Image)

Est.$500