1856 10kop za lot, 1k za konv (10k per 10 lot; 1kop for cover) embossed Eagle, in blue, with gray background, die essay on thin card, bottom right angle cut out and replaced as usual, v.f. and beautiful engraved essay, probably the only known in this color, handstamped "P M D". A wonderful rarity (Image)

Est.$15,000

1857 10k brown & blue, margins all around, tied by boxed "Revel 29 Apr 1858" datestamp on outer FL addressed to Riga, v.f., with framed "Polucheno 2 May 1858" arrival handstamp on back (Cat No. 1) (Image)

Est.$2,500

1858 10k brown & blue, beautiful deep color, well centered and affixed on complete FL addressed to Nuggen (Estonia), stamp uncanceled and incredibly fresh, v.f. (Cat No. 2) (Image)

Est.$2,500

1858 10k brown & blue, vertical pair, each stamp canceled by pen cross on outer FL from St. Petersburg to Helsingfors, red 5 Feb 1858 departure and "ANK 19/2" arrival datestamp on back, v.f. (Cat No. 2) (Image)

Est.$2,500

1858 10k brown & blue, vertical pair, each stamp canceled by Riga 15 May 1858 postmark on FL to Libau, filing fold away from the stamps, beautiful cover, signed Mikulski and Herman Toaspern (Cat No. 2) (Image)

Est.$2,500

1858 20k blue & orange, thin paper, used, well centered with intact perforations on all sides, interesting variety showing broken frame at bottom right, minor perf. correction, v.f., with Hovest certificate, cat. $1700 (Cat No. 3) (Image)

Cat. $1700, Est.$500

1858 20k blue & orange, thin paper, used, canceled "2" in oval of dots, watermark "2" shifted to right, fine stamp, with Sorani certificate, cat. $1700 (Cat No. 3) (Image)

Cat. $1700, Est.$500

1863 5k black & blue, cancelled by dots on front of 10k stationery entire envelope, with "11" St. Petersburg-Warsaw Railway cancel and corresponding TPO 1 Aug 1863 pmk on back, addressed to Kamenetz-Podolski, some cover mending, otherwise fine and rare combination franking, cat. $4500 (Cat No. 11) (Image)

Cat. $4500, Est.$1,000

1889 3.50r black & gray (horizontally laid paper), sheet of 25, n.h., few toned specks and opened perforations, fine-v.f. and splendid multiple, cat. $3125 (Cat No. 53) (Image)

Cat. $3125, Est.$500

1902 7k dark blue, printed on gum only, right sheet margin single, fine and very rare (Cat No. 59var) (Image)

Est.$150

1922 7,500r blue, horizontal strip of three, spectacular paper fold creating a "gutter pair", n.h., v.f. (Cat No. 203var) (Image)

Est.$250

1924 Definitives (typographed) 5r upper right sheet corner margin strip of four, perforated Obrazets and with invalidating horizontal lines, fine and attractive positional piece (Cat No. 293S) (Image)

Est.$100

1925 Definitives (watermarked), 8k and 1r perf. 14 1/2x15, both n.h., fresh and v.f., rare, cat. $1150 (Cat No. 311a,321a) (Image)

Cat. $1150, Est.$500

1927 Esperanto, 14k Zamenhof, vertical imperforate pair, n.h., folded between stamps, otherwise v.f., with handstamped guarantee marks, cat. $2750 (Cat No. 374c) (Image)

Cat. $2750, Est.$1,000

1927 8k Worker & Sailor, misperforated block of nine, n.h., v.f. and impressive (Cat No. 378var) (Image)

Est.$250

1927 October Revolution,10th Anniversary Issue, 28k apple green, perforated trial color proof card mounted, with red PROEKT 25 June 1927 overprint, v.f., with 2019 Mandrovsky certificate (Cat No. 381P) (Image)

Est.$2,500

1932 Philatelic Exhibition in Moscow, souvenir sheet of four, unused without gum as issued, overall toning and corner crease, otherwise fine, only 475 printed, cat. $19500 (Cat No. 485-86var) (Image)

Cat. $19500, Est.$5,000

1933 Leningrad Exhibition, two sets of two, one 70k on 35k n.h., others l.h. or h.r., fine-v.f., cat. $832 (Cat No. 487-88) (Image)

Cat. $832, Est.$200

1933 Leningrad Exhibition, set of two, n.h., v.f., cat. $507 (Cat No. 487-88) (Image)

Cat. $507, Est.$150

1935 Spartacist Games, 2k carmine and green, perforated trial color proof, reduced size and trial perforations, without gum, v.f. (Cat No. 560P) (Image)

Est.$1,000

1935 Persian Art, 15k dark blue, perforated trial color proof on watermarked stamp paper, trial perforations, fine and rare item (Cat No. 571P) (Image)

Est.$2,500

1939 Soviet Agricultural Fair, 50k copper red, perforated proof on card, with red PROEKT 3 July 1939 imprint at bottom, trial perforations, v.f. (Cat No. 730P) (Image)

Est.$2,500

1945 (6 Apr) registered cover to Tel Aviv, with combination franking consisting of contemporary Soviet and unissued "8Kop" perf. and imperf. surcharges (six different), rare on cover, fine-v.f., with censor and arrival markings (Image)

Est.$750

1948 Regular Issues, 25k imperforate single mounted on card with red PROEKT dated 30 September 1948 and signature, v.f. (Image)

Est.$6,000

1949 Pushkin, 40k imperforate with coupon at right, mounted on card with red PROEKT dated 21 April 1949 and signature, v.f. (Image)

Est.$2,500