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I have a similar Hallmark on an antique watch chain, gilded
What does GAS mean on a chain that has 925 italy onit
What is the 925/PT mean on made in Italy gold chain
says it on the back of my gold chain. I assume it stands for gold chain...
British Units
9ct/ karat gold
1758 AR is the trademark/hallmark of the factory in Italy that made that piece of jewelry. 1758 is the number of the factory and AR stands for Arezzo, the city in Italy.
925 Italy is a marking for sterling silver.
H100
That 9.25 percent of the chain is silver the rest is of various
KA 1772 is likely a maker's mark or a hallmark indicating the manufacturer or brand of the necklace. You can try researching the mark online or visiting a jeweler who may be able to help you identify the origin of the necklace bearing this mark.
The Hallmark, Gilbert Marks....london 1861- 1905