Nautical Sterling Silver Charm Dolphin Anchor Crown NAYTIKH EBAOAE 1974 Greek

Nautical Sterling Silver Charm Face shows a Dolphin, Anchor, Crown design Back marked 925 as well as what looks like ZK.5 Inscribed: NAYTIKH EBAOAE 1974 Many of the letters in the second word are Greek Weighs 5.5 grams I cannot find this design anywhere. Came from an estate lot so provenance unknown