There are 4 names in this directory beginning with the letter J.
Janvier Reduction Lathe
A special reducing lathe is used to carve the hub during the die making process.
A token or coin-like medals produced in Europe from the 13th through the 17th centuries. They were produced as counters for use in calculation on a lined board similar to an abacus but found use as a substitute currency.
A system to catalog U.S. pattern, experimental, and trial coins invented by Dr. J. Hewitt Judd in 1959.