The "b" could be an initial of some sort but has nothing too do with value of the gold.
It may just be the artist's signature...
More than likely, it is the maker's mark
An S inside a gold ring is the maker's stamp. If the ring were not gold and had an S inside it would stand for sterling silver.
Not
the stamp shows that the ring is of 14 karat gold piece; to check if it is real or not.
The 923 you're seeing inside your ring is likely a stamp indicating the purity of the ring. 923 means that the ring is 92.3% pure gold or silver (whichever your ring is).
What does WSE stamp stand for inside Jostens ring
GOLD SHELL = Equals fake or gold plate If the GS stamp is inside of a diamond shape it's the makers mark for Gottlieb & Sons.
Zinc coating(hot dipped) with iron n steel
what is GL stamp inside of the ring mean
Palladium
What does am-g 10k on the inside of a ring mean
The XX stamp on gold means 20 karats.
It means that the ring is made of 18K gold.