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  2. Stamping (metalworking) - Wikipedia

    en.wikipedia.org/wiki/Stamping_(metalworking)

    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 ...

  3. Postage stamps and postal history of the United States

    en.wikipedia.org/wiki/Postage_stamps_and_postal...

    The 1-cent drop-letter rate was also restored, and Post Office plans did not at first include a stamp for it; later, however, an essay for a 6-cent Franklin double-weight stamp was converted into a drop-letter value. Along with this 1¢ stamp, the post office initially issued only two additional denominations in the series of 1851: 3¢ and 12 ...

  4. Movable type - Wikipedia

    en.wikipedia.org/wiki/Movable_type

    v. t. e. Movable type (US English; moveable type in British English) is the system and technology of printing and typography that uses movable components to reproduce the elements of a document (usually individual alphanumeric characters or punctuation marks) usually on the medium of paper .

  5. Silver hallmarks - Wikipedia

    en.wikipedia.org/wiki/Silver_hallmarks

    In some countries, the testing of silver objects and marking of purity is controlled by a national assayer's office . Hallmarks are applied with a hammer and punch, a process that leaves sharp edges and spurs of metal. Therefore, hallmarking is generally done before the piece goes for its final polishing.

  6. List of military headstamps - Wikipedia

    en.wikipedia.org/wiki/List_of_military_headstamps

    On the military headstamp the "SB" is at 12 o'clock and the "S" is at 6 o'clock. Sold to the Steyr-Werke A.G. of Vienna, Austria in 1922. SB / Schönebeck, P69 Sellier & Bellot – Schönebeck (1922–1945) – Schönebeck, Germany. The "SB" was at 12 o'clock and the text for Schönebeck occupied the lower half of the headstamp.

  7. Postage stamp - Wikipedia

    en.wikipedia.org/wiki/Postage_stamp

    2. Perforations. 3. Denomination. 4. Country name. A postage stamp is a small piece of paper issued by a post office, postal administration, or other authorized vendors to customers who pay postage (the cost involved in moving, insuring, or registering mail). Then the stamp is affixed to the face or address-side of any item of mail —an ...

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