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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 of 1925.

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

Delhi Specimen Two Annas of Salmon.

Delhi Specimen Two Annas stamp.

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

Delhi Specimen Stamps of King George V of 1925.

Endangered Birds of India error stamps of 2006.

Half Anna Lithograph of 1854

IX Asian Games Complete sheet of 35 Stamps of 1982.

Pair of Queen Victoria One Rupee Stamp of 1868 with IPN ...

Postal Forgeries in Lithograph envelope of 1967.

One Half Anna Stamps of King George VI of 1946.