10k Yellow Gold Heart Locket

Locket only for sale, the necklace is for display purposes only. From 1986 with a personalized inscription on the back of the pendant the buyer can decide whether to have removed. It consists of a person's name and a date. This is a lovely locket with a detailed etched design on the front. The 10k mark can be found on the inside of the locket as circled in blue in picture 7. Could be some sort of other material that's the rim/border of the inside as per pics. Some fine scratches from wear but in good condition for being 39 years old.