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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.

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

Delhi Specimen Two Annas stamp.

Delhi Specimen Two Annas of Salmon.

Indian Classical Dance Complete Set of six stamps of 1975.

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

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

Fragrance of rose Perforation Shifted error Block of f ...

One Anna Lithograph of 1854.

India Used Abroad overprinted Bahrain on KGVI

Jammu & Kashmir. 1/4 Anna. Block of 15 Stamps. Re-print ...

Bhopal. 1/2 Anna. Black. 1902. Block of 8 Stamps. Re-pr ...

India Postage Complete Set of Twenty Stamps of 1937.