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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 of Salmon.

Delhi Specimen Two Annas stamp.

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Delhi Specimen Two Annas stamp of 1925.

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Thirty Eight Blocks Complete set of 1982.

125th Anniversary of Indian Police Se-tenant set of 2 o ...

Rare 20 Naya Paisa Strip of 6 stamps of Coil Issue Map ...

Photogravure error Block of Six Stamps of 1981.