Here's part of the answer, which I just got from All Experts.com. It's about the kind of metal it is: 18 K gold. and the 0.750 also means 18K gold. (75% pure gold and the rest other metals)
"The number 750 is for 18k gold. Pure gold is 24 karat. Eighteen karat gold is 18 parts pure gold and the rest is other metals. The number is easy to come by, by division. 18/24 is 0.750. This means the 18k is 750 parts (75%) pure gold and the other 250 parts(25%) are other metals. The mark is simply 750 in 18 karat gold."
The other stuff, I don't know. It might be the logo of the maker.
gold
no
CU is 14k gold over copper.
Your gold is real :)
What does alm mean on my bracelet
George Anderson
It means the bracelet is 14k gold ( = 58.5% pure gold).
Gm4
It was stamped within the Arezzo valley of Italy and the 1760 is the karat
I have a bracelet that has 2 locks on the side with 325 rcz on the lock. Can you tell me what that means
A silver bracelet stamped with 925 is typically sterling silver. Sterling silver has a current market value of US $17.19 per ounce.
If a bracelet has Paj BB China stamped on it, it means that it is made of Brass and manufactured by Prime Art and Jewel. The word "China" is on the bracelet because this is where the bracelet was made.