Matrix (numismatics)

Intermediate mould used in the process of manufacturing coins

In numismatics, a matrix is an intermediate mould used in the process of manufacturing coins. The use of a matrix lengthens the production of dies, but makes for a gain in consistency.

## Terminology

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The matrix is an "original die": indeed it has its design in the same sense as a die. The design is incised into the matrix, which is used to create punches. The creation of a matrix addresses the basic problem for the coinage of multiplying dies, i.e. having enough accurate copies of dies to produce long runs of essentially identical coins.[1][2] The creation of a master punch from a matrix is called "hobbing".[3]

In contrast, a patrix is a type of master punch with a design in relief, used to create dies.[4]

## References

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* Money portal

1. ^ Billing, Archibald (1875). The Science of Gems, Jewels, Coins, and Medals, Ancient and Modern. Daldy & Hill. p. 94. Retrieved 18 June 2018.
2. ^ Mechanic's Magazine, Museum, Register, Journal & Gazette. Knight and Lacey. 1834. p. 188.
3. ^ Salzano, Tammi (2009). Deluxe Canadian coin collecting album. Scholastic Canada. p. 33\. ISBN 9780545177399.
4. ^ Courtney, Yolanda C. S.; Britain), Royal Numismatic Society (Great (2004). Public house tokens in England and Wales c.1830-c.1920. Royal Numismatic Society. p. 117\. ISBN 9780901405784.

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