A beautiful mint piece of a typologically more interesting item.
Obverse: the Doge kneeling at the feet of St. Mark, in the rim the legend:
ANTO-VENERIO--S/-/M/-/V/E/N/E/T/I/-;
Reverse: Jesus, surrounded by legend:
SIT-T-XPE-DAT'-QTVREGIS-ISTE-DVCAT;