[Event] Ancient Coin of the Deep Sea

An ancient coin found in the deep sea. It looks like it was made centuries ago.
Bring it to Igor Bartali in Velia to exchange them for various items.
x5 - [Event] Shakatu's Rarity Box
x75 - Ring of Crescent Guardian
x100 - Memory Fragment x100
x250 - Ship License: Epheria Sailboat
x1,000 - Ship License: Epheria Frigate
(Press Secondary Attack for detailed location.)