Italy, Venice. Pietro Gradenigo, 1289-1311. AR Grosso. 21mm.
 
Obv: At left, doge (duke) stands facing receiving banner from Saint Mark. Rev: Facing figure of Nimbate Jesus Christ Pantocrator, enthroned, IC XC field to the left and right.
 
A rich and attractive iridescent rainbow tone, much eye appeal. A particularly nice and a choice example.