The Venetian gold ducat was a world-wide trade coin struck in Venice from 1284 to 1797. The ducat was also known as the zecchino which was corrupted to "sequin." Sequins are mentioned in Robert Louis Stevenson's novel Treasure Island.

Gold, 20 mm, 3.50 gm, 0.986, corrosion spots from copper or silver deposits
Obverse:
St. Mark on the left standing facing right, presenting long scepter to kneeling Doge
DVX between them
SM VENET PASC CICON (Sacra Moneta Venetiae, Pascali Ciconia)
English: "Sacred Money of Venice, Pasquale Cicogna"
Reverse:
Christ standing facing, holding Gospels in left hand and raising right hand in benediction,
within pointed oval figure containing 17 stars.
SIT T XPE DAT QTV REGIS ISTE DVCAT (Sit tibi, Christe, datus, quem tu regis, iste ducatus)
English: "O Christ, let this duchy, which you rule, be dedicated to you"

Pasquale Cicogna is believed to be the "Duke of Venice" in William Shakespeare's play The Merchant of Venice which was written between 1596 and 1598.