Rolling

Northwest Territorial Mint: Rolled Sheet
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Strips Are Rolled

Once the long, thin strips of extruded metal have cooled, they are trimmed using a hydraulic shearer and prepared for rolling. A highly precise instrument called a micrometer is used to calibrate the precise thickness of each strip of metal. Next, the strips are individually fed into a high-pressure rolling machine and gathered for the next step in the process. After each strip has been rolled, it is inspected to ensure that it meets the specifications for thickness.

After the strips have been rolled, they are then sent to the blanking machine.

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Northwest Territorial Mint: Insights & Ideas
Insights & Ideas
Hot Topic: One Sided?

Having a coin made for mounting? This stagecoach bar was made for mounting on the front cover of a large coffee table book. The blanks for this were made from strips of .999 silver that were much thinner than a two sided bar. The reverse was left blank. Such an approach can be done for a wide variety of presentations.

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Northwest Territorial Mint: In The News

Coins of Ancient Empires

Northwest Territorial Mint: Did You Know?The history of human civilization is filled with stories of great empires, some of which lasted hundreds of years and extended thousands of miles at their peak. As empires grew, the use of coinage evolved. To ensure that merchants from every corner of the empire could easily recognize currency, large coins with simple designs were used. In fact, throughout the Persian and Roman empires, large gold coins - the Persian "daric" and the Roman "aureus" - played a major role in expanding trade and increasing the size of the empires.