Images | Description | Current Bid |
 | Lot #3041 10k brown & blue 1866 10k brown & blue, center inverted, tied on piece by "Poretchie, Gouv. Grodno 16.1.1875" postmark, fine example of this rarity, less than 10 known to exist, including two on cover, signed Mikulski, with his certificate (Mi.21xK) Catalog #23b Catalog Value Euro 50,000 | Price Realized $47,500.00
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 | Lot #3042 10k brown & blue 1866 10k brown & blue, center inverted, two copies used on cover from "Kursk 18 Dec. 1874" to Warszawa, with 21 Dec. 1874 arrival postmark alongside. Addressee's name excised and partly covered with white paper, stamps fine, with additional departure and Postal Car markings on reverse. A stunning rarity from Imperial Russia, an absolutely unique cover, with Mikulski cert. (Mi.21xK), catalogue value for stamps off-cover
Catalog #23bc Catalog Value Euro 100,000+ | Price Realized $120,000.00
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 | Lot #3043 10k brown & blue 1866 10k brown & blue, printing error showing "broken left 10", so-called "Kalach" (French roll), fine. The only known unused example of this elusive variety * Catalog #23var | Price Realized $5,000.00
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 | Lot #3044 10k brown & blue 1866 10k brown & blue, printing error showing "broken left 10", so-called "Kalach" (French roll), two used examples, fine and scarce pair of varieties Catalog #23var | Price Realized $700.00
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 | Lot #3045 10k brown & blue 1866 10k brown & blue, printing error showing "broken left 10", so-called "Kalach" (French roll), used on back of cover from "Puguyev 25 July, 1874" to Kharkov, some cover mending, otherwise fine, rare
Catalog #23var | Price Realized $3,000.00
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 | Lot #3046 10k brown & blue 1866 10k brown & blue imperforate, center shifted to left, used in 1874, fresh and v.f. One of the only two imperforate varieties known to exist, ex-Faberge, with Mikulski cert. (Mi.21xU) Catalog #23c Catalog Value Euro 10,000 | Price Realized $17,000.00
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 | Lot #3047 10k brown & blue 1866 10k brown & blue imperforate, center shifted to top, used in 1875, margins all around except at top, fine. The second of the only two known imperforate varieties, with Mikulski cert. (Mi.21xU) Catalog #23c Catalog Value Euro 10,000 | Price Realized $10,500.00
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