The Quest for a Monotype Computer Interface
Started by Mechanic, August 02, 2011, 11:43:46 PM
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QuoteThe Penny Black was the world's first adhesive postage stamp used in a public postal system. It was issued by the United Kingdom of Great Britain and Ireland on 1 May 1840, for official use from 6 May of that year.All London post offices received official issues of the new stamps but other offices throughout the United Kingdom did not, continuing to accept postage payments in cash only for a period. Post offices such as those in Bath, began offering the stamp unofficially after 2 May.
QuoteThe stamps were printed in sheets of 240 stamps. Each sheet consisted of 12 vertical columns and 20 horizontal rows.Corner letters.As a forgery precaution, "check" letters were placed in the corner squares of Penny Black stamps. The letters identified the position of each individual stamp on a sheet.The right square letter indicates the vertical column. The letter A indicates the first column. The second column is B and so on across to L for the last (twelfth) column. The left square letter indicates the horizontal row. So the first row is A, the second B, the third C and so on until row 20 which is indicated by the letter T. For example, the stamp in the upper left hand corner was lettered AA and the stamp in the lower right hand corner of the sheet was labelled as TL. Each letter combination is just as common or as rare as any other.
QuoteMain article: Penny black printing plates The Penny Black was printed from 11 plates, but as plate 1 was completely overhauled due to excessive wear, it is generally considered to be two separate plates, 1a and 1b. Plate 11 was originally intended solely for the printing of new red stamps, but a small number were printed in black. These are scarce. The stamps were printed in unperforated sheets, to be cut with scissors for sale and use.