piefort
/ˈpaɪfɔrt/
noun
- A thick coin, especially one struck as a pattern or proof, often with a larger size and weight than a standard coin.
- The museum displayed a rare piefort of the 1804 silver dollar.
- Collectors prize the piefort version of the gold eagle for its heft and detail.
- The mint produced a piefort to test the new design before mass production.