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Stamping (also known as pressing) is the process of placing flat sheet metal in either blank or coil form into a stamping press where a tool and die surface forms the metal into a net shape. Stamping includes a variety of sheet-metal forming manufacturing processes, such as punching using a machine press or stamping press, blanking, embossing ...
Egypt uses Arabic-language letters and numerals in its headstamp – letters and numerals are read from right to left and dates and numbers are read from left to right. (Arabic-language numerals are different from the Western "Arabic" numerals (i.e., 1, 2, 3, etc.) – also, Arabs refer to their counting system as the "Indian" numerals).
French silver made for export carries an assay mark in the shape of the head of Mercury, along with a number to indicate the millesimal fineness: "1" for .920, "2" for .840 and "3" for .750. French silver also is punched with the mark of the maker, by law in the shape of a lozenge, usually with the maker's initials and a symbol.
Metal stamps turned out to be impractical, and later numbers were tattooed with a single needle on the left forearm. The tattoo was the prisoner's camp entry number, sometimes with a special symbol added: some Jews had a triangle, and Romani had the letter "Z" (from German Zigeuner for "Gypsy"). In May 1944, the Jewish men received the letters ...
Hallmarks include information not only about the precious metal and fineness, but the country from which the item was tested and marked. Some hallmarks can reveal even more information, e.g. the assay office, size of the object marked, year the item was hallmarked - referred to as a date mark (also known as date letter). [2]
A cylinder block of the Sudan stamp jubilee issue of 1948 A plate strip of three of the 2-cent US stamp of 1895 includes the BEP's name. A US plate block from 1972. Note the addition of a number for each color. This increased the cost of collecting plate blocks. That, plus the format change, discouraged many collectors.
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