other side
it's a piece of eight. the cross was a common motif in this era.
1622 is an interesting year because that's when the Nuestra Senora de Atocha went down and there was a lot of recovered pieces of eight from that wreck. Also many replicas made in commemoration, so be careful.
>>2542679
Spanish, Philip IV (rendered PHILIP IIII DG) of Spain and lots of other places, including Naples which is the origin of your coin.
most likely a spanish replica coin made in the 1900s. you are american im willing to bet
cross design looks portuguese
Some worthless replica