Punch (Accepted)

A punch is a coiner’s tool, consisting of a solid slug of steel with a flattened end for hammering.  It’s used to either shape the coin into a more circular form, or as a die to stamp the design in relief on its surface.  It’s a period artifact, dating to at least 1568 [Amman 39], but no examples have been found in heraldry.  See also rivet.

The Moneyers Guild of An Tir bears:  Argent, a goat clymant maintaining in its dexter forehoof a hammer and in its sinister a punch sable within a bordure sable bezanty.