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1850 (?), Hausberg Copper plate Proof, 1/2a, 2as X 2 &amp; 4as, Plate of 1854 Stamps Series, Plate IV, Excellent Condition, Extremely Rare

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Printing from copper plates is the technique of transferring to a sheet of paper, a piece of satin or any similar material the imprint of lines etched with acid or engraved, with a burin or by some other means, on a plate of copper or of wood.

Stamps are printed in different processes. Paper stamps have been produced in a variety of techniques such as letterpress, photogravure, offset lithography printing, engraving &amp; intaglio. 

Stamps in the late 1840&#39;s were&nbsp;processed through intaglio printing. Thus, even if a postage stamp issue is printed with the same design, the stamp value is not the same at all. Every printing method has slight variations during the printing process.

Delhi Specimen Two Annas stamp.

Delhi Specimen Two Annas stamp of 1925.

Indian Classical Dance Complete Set of six stamps of 1975.

Delhi Specimen Two Annas of Salmon.

complete set of Twenty and fifty Paise and One and Two ...

An Extremely Rare Trial Specimen Stamp of 4 Annas from ...

Thirty six blocks Complete Set of 1977.

Purple Gnat Fighter Twenty Paise stamp of 1967.

Fifty Six blocks Complete set of 1987.

Photogravure error Sheet of 100 Stamps of 1979.

Year of food and Agriculture Organisation Block of four ...

Rare Mint Telegraph Stamps of Victoria Queen of 1869 -7 ...