Vintage Arpeggio 17 jewels antimagnetic Swiss made pendant watch gold necklace

Vintage Arpeggio 17 jewels antimagnetic Swiss made pendant watch gold necklace. It’s beautiful! It does NOT tick. So this is great to wear as necklace but does NOT keep time. This is vintage by arpeggio. The watch pendant is gold in color and shows color fading. I don’t know how to open the back. The long necklace is silver in color and tarnished. The necklace is 24” long and is tarnished. The watch pendant from the top of the bail to the bottom is 1 3/8” tall. From left to right it is 1.25”. Inventory 65