1 Cent

Massachusetts was the only U.S. state to operate its own official mint, authorized by the General Court in 1786 and housed in a building on Milk Street in Boston. The facility ran for barely two years before the newly ratified Constitution prohibited states from coining money, rendering it immediately obsolete. Dies were cut by Joseph Callender and Jacob Perkins, and the series is known for significant variation in planchet quality — many surviving examples show porosity or lamination faults traceable to inconsistent copper sourcing during the mint's short run.