Sterling Vintage Dolphin Ring. This sterling vintage dolphin ring is an estate find that will adorn a size 6.75 finger. It wears nicely with the body of the dolphin, fins and tail all resting on the finger. The widest measurement is about 1'' wide from fin to tail. I have not polished it and it exhibits a light patina. There is another mark along with the 925 but I can't make it out. It could possibly be Mexican.