I think it is probably an asper of Caffa/ Kaffa. These were issued by the Genoese and various Western rulers (the 'trident' is actually the 'gate' of Genoa), though I can't find a match on Zeno.
One of mine is below, issued under Filippo Maria Visconti, Duke of Milan, as Duke of the Genoese Republic, acknowledging Ulugh Mohammed (1421-1434) and has the gate on one side with a latin inscription and a tamgha on the other with an arabic inscription round. 16 mm, 0.89 gm.
Alan