1888-90, Great Personalities, essays of unissued denominations and designs on cards, San Martin 15c - one die and five of stamp size, Avellaneda 20c - one die, Lopez 24c - five of stamp size, Dorrego 30c - four of stamp size, Saavedra 90c - nine of stamp size, including horizontal pair, mounted on five pages from a Collection, generally fresh condition, VF and scarce assemblage
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2, 3, 4, 5

500.00

1890, Santiago Derqui, four die proof sheetlets in irregular blocks of six of 2c in dark violet, lilac, indigo and black, printed on india paper, in addition card mounted proof in violet, all placed on two pages from a Collection, nice condition, VF
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400.00

1891, Great Personalities, "peso" denominations, 16 die and plate proofs in various colors for issued 1p, 5p and 20p denomination, in addition 19 essays for unissued 2p, 10p and 50p, mounted on six pages from a Collection, a few items with minor toning, still VF and very rare
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2, 3, 4, 5, 6

1892, 400th Anniversary of Discovery of America, complete set of two, 65 imperforated trial color proofs printed on cards in singles, pairs and blocks of four, in addition three essays on india paper, two of which are mounted on sunken cards, and the note of Postmaster General with pre-printed stamp, all housed on seven pages from a Collection, minor toning could be expected on large pieces, still VF and scarce assembly
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2, 3, 4, 5, 6, 7

1897, Belgrano, 10c-50c, three compound proof sheetlets in form of block of six (2x3), colors - yellow, green and red, top left stamp of each block with value tablet blank and bottom left has "24" with invalidating lines, printed on india paper, mounted on two pages from a Collection, fresh and VF
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300.00

1910, Centenary of the Republic, imperforated plate proofs in black, engraved printing on glazed cards, complete set of 16, mounted on two pages from a Collection, fresh, VF
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250.00

1910, Centenary of the Republic, 1/2c-20p, 224 imperforated trial color proofs on glazed cards, including singles, pairs and several blocks of four, in addition die proof of 12c in blue on india paper, arranged on pages from a Collection and housed in dark blue album, mainly perfect quality, VF and beautiful assembly
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2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21

1923, Rivadavia, Alfred Lichtenstein's reprints of 1864 issue for 5c, 10c and 15c denominations, printed in black on white wove ungummed paper, bottom left corner margin blocks of four, mounted on page from a Collection, VF

150.00

1926, Centenary of the Post Office, perforated (10 3/4) essays of unaccepted design, two different complete sets of five, neatly mounted on two pages from a Collection, fresh, VF
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200.00

1950, International Philatelic Exhibition, 57 imperforated plate or trial color proofs in singles or blocks of four, arranged on five pages from a Collection, no gum as produced, VF
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2, 3, 4, 5

500.00

1940, Mercury and Airplanes, 110 perforated and imperforated trial color proofs in singles, pairs and blocks of four, printed on glazed paper, neatly displayed on six pages from a Collection, VF
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2, 3, 4, 5, 6

750.00

1889, Great Personalities, 1/4c-4c, four imperforated proofs in red for newspaper wrappers, mounted on page from a Collection, VF

150.00

1887, two die proofs in black, first one on glazed card, showing frame only, size 71x97mm, the other one is complete design with value tablet blank on thin rough paper, size 90x47mm, both mounted on one page from a Collection, VF

150.00