I present to you the ring of the Japanese coin 1000 Yen 1964.
Such a coin was made in Japan only in 1964.

The coin is dedicated to the Olympic Games in Japan, which took place in 1964.
Material - sterling silver (silver 925)
I can make sizes from 9 - 14 US
Ring width 9.8 - 10.1 millimeters.
The weight of the finished ring is about 15.5 - 16 grams
I need 2 to 3 business days to make the ring.

Delivery time in USA - 7-14 business days