Vintage John Atencio Sterling Silver 18k JA SS Necklace

Vintage John Atencio Sterling Silver 18k JA SS Necklace Item is "Preowned ". The black part on outside of necklace feels like leather but not sure. Tested for Silver. Shows some wear from use and age but overall good condition and still has plenty of life left. Rare hard to find style from this maker. Just over 16.5" in length and total weight of necklace is about 54 grams. Check pictures thoroughly. From a smoke free environment.