This is a rare 1606 Milled Hand Struck Coin, which is a great addition to any coin collection. The coin is believed to be from the Spanish Pirate Era and features the denomination of Maravedí. It has been circulated and is made of copper or billon. The coin is uncertified and has not been graded, although it is estimated to be of high quality. The KM Number is not sure, but it is a great find for collectors of world coins, especially those interested in Spanish history.