Lucky Coin

The Lucky Coin is an accessory that is rarely dropped from Pirates during a Pirate Invasion.

Extra coins have a (20%) chance of dropping every time the player hits an enemy with melee, ranged, magic, summon attacks or when an enemy is hit by a non environment trap. Damage return effects like with Turtle armor and Thorns Potion won't drop extra coins, nor will hitting background animals like bunnies nor other entities that don't drop coins, such as the Golem or Plantera.

From the 20% chance, there's an 89.1% chance it will be copper coins, 9.9% - silver coins, 1% - gold coins. Every time it drops between 1 and 10 coins. Thus, on average, 6.09 silver coins will drop for each time the effect happens, or 1.2 silver coins per hit.

A good way to take advantage of this is with the Slime Staff. Against stronger enemies (like Mimics), the baby slime summoned by the staff will attack rapidly, but only do 1 damage per hit. This gives more chances for coins to drop. Using this tactic during a Pirate invasion can easily produce 2 to 3 platinum per invasion, or more if you are lucky.

Another choice, whilst hunting for money, is to use the Flask of Gold or Golden Bullets in addition to the Lucky Coin, increasing the amount of money enemies drop after they die.

Trivia

 * This accessory can have the Lucky modifier, making it a Lucky Lucky Coin.