It may mean that the ring is made of sterling silver.
The "IS" stamp on a silver spoon likely stands for International Silver Co, which was a prominent American silver manufacturer. The stamp helps to identify the manufacturer of the spoon and can also sometimes indicate the silver content of the piece.
What does MNSN On sterling jewelry mean
It means the silver is 92% pure, i.e. 92% silver and 8% other metals.
Probably means that it is sterling silver.
The sterling silver standard has a minimum millesimal fineness of 925
It is an abbreviation of the word "sterling," meaning that the piece of jewelery is made from sterling silver.
It means that 99.8% of the mass is silver. Sterling has a minimum of 92.5%.
The anchor symbol on old sterling silver typically represents that the item was made in Birmingham, England. It is a hallmark that signifies the standard of purity for the silver content in the item.
Not Really
Means it is Sterling Silver
yes