Source : Webster's Revised Unabridged Dictionary (1913)

Mintage \Mint"age\, n.
   1. The coin, or other production, made in a mint.

            Stamped in clay, a heavenly mintage.  --Sterling.

   2. The duty paid to the mint for coining.

Source : WordNet®

mintage
     n 1: coins collectively [syn: {coinage}, {specie}, {metal money}]
     2: fee paid to a mint by the government for minting a coin
     3: act or process of minting coins