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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.

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

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

Delhi Specimen Stamps of King George V of 1925.

Delhi Specimen Two Annas stamp of 1925.

Delhi Specimen Two Annas of Salmon.

International Commission In Vietnam Set of Fifteen stam ...

One Half Anna Stamps of King George VI of 1946.

Four Annas Stamp of on Coper of 1858 sent to Colchester.

Jaipur. 1911. SGNO 20. 1 Anna. Maharaja Sawai Madho Sin ...

India Postage Complete Set of Twenty Stamps of 1937.

Indian Classical Dance Complete Set of six stamps of 1975.