If you look closer you'll see that the 5 is actually an S. The 925 stands for 92.5%, which is the Sterling silver standard. So a piece of jewelry with the marking S925 means that it's composed of 92.5% silver and 7.5% copper (usually it's copper).
The marking "5925 GND" on a ring typically indicates that the ring is made from a specific type of gold alloy, often 14k or 18k gold, with "GND" denoting that it is a gold and nickel alloy. The "5925" could refer to its composition, suggesting that it contains 59.25% gold, which is a common fineness for jewelry. This marking helps identify the quality and authenticity of the material used in the ring.
What is the value of this ring it is S925
Oh, isn't that a lovely number, 5925? The value of a ring can be more than just its material worth; it can hold sentimental value, memories, and love. Remember, the true value of a ring comes from the heart and the meaning attached to it, not just its monetary value.
5925
4 karrot gold
Could be 2.5 carat total weight diamonds.
It means 14K PBD Peter Brams designs
http://www.trademarkia.com/esx-74196079.html
If it is a vintage ring, it may be from the Traub company that made engagements rings circa 1925 and marked their rings with a TT.
"P4SR" marked on a ring could indicate that the ring is made of platinum (P), with a purity level of 950 parts per thousand (4/5). The "SR" could be a maker's mark or hallmark indicating the manufacturer or designer of the ring.
SECO was the trademark of Stein and Ellbogen, a jewelry wholesaler.
i have the same 18 marked 750 gold ring