cobber coin

Found this in the seaweed wash up area of the beach, with historic significance in the northeast. Resembles designs found on reales or other old coins although i am stumped and have no idea what this is. Rings up 54-60 on my AT max and as jewelry/coins on my minelab. There is some coral or sand...

Found this on an old beach in the northeast not sure what it is

cobber coin to id. now with picture. Hi guys i am from Denmark and i am new on this site, but i need some help with a coin i found on a beach in Malaga, Spain one side has a crown with crossed things under and the letter S to the left and 1 to the right. The other side has a celtic cross on it...