Artificial intelligent assistant

mint-mark

ˈmint-mark
  [mint n.1]
  A mark placed upon a coin to indicate the mint at which it was struck.

1797 Encycl. Brit. (ed. 3) XII. 167/2. 1826 Hawkins Anglo-Gallic Coins Brit. Mus. 87 note, The mint mark is a cross patonce. 1853 Humphreys Coin-coll. Man. i. vi. 49 There is on this coin a small figure of æsculapius, a sort of mint mark.


fig. a 1849 H. Coleridge Ess. (1851) I. 226 What can the loyal poet do, but..impress it with the mint-mark of his own devoted fancy? 1887 Lowell Democr., etc. 108 That spontaneousness which is the mint-mark of all sterling speech.

Oxford English Dictionary

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