[ noun koun-ter-mahrk; verb koun-ter-mahrk ]
/ noun ˈkaʊn tərˌmɑrk; verb ˌkaʊn tərˈmɑrk /
Also called counterstamp. a sign or device stamped on a coin after its minting.
verb (used with object)
to stamp (a coin) with a countermark; counterstamp.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019