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A third letter in the headstamp indicated the metal supplier or manufacturer for the cases. It was closed in 1944 when Romania pulled out of the war . It was renamed the "9th of May" Workshops in 1947 and was demilitarized and repurposed to make machinery and spare parts for the construction industry.
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 ...
These metal punch types can be seen as precursors of the letter punches adapted in later millennia to printing with movable metal type. Cylinder seals were used in Mesopotamia to create an impression on a surface by rolling the seal on wet clay. Seals and stamps
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.
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 ...
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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