Arnex incabloc 17 jeweled pocket watch with gold ch…

Vintage arnex incabloc 17 jeweled pocket watch. The watch itself has stunning intricate details both outside and on watch face. This is a Swiss made watch. Currently it is not ticking so will need tinkered with, in beautiful shape structurally. The chain is a bit of a mystery. Took it to a local jeweler to look over. The chain has NO reaction to magnet. They did the stone test and said it was inconclusive, told me they suspect it to be 8kt but would need to have it laser tested (not sure where or how to have that done). So that being said this chain may or may not be actual gold. Buyer acknowledges that fact when purchasing. It measures 18" long. Unsure of the weight. Also note jeweler took chain off watch, can be put back on.