Silver Choker Necklace

This is a vintage silver choker. It does not have any branding, but I sourced it from an estate sale along with a number of other vintage items. The total weight is 15 g. I tested it with a magnet and it does not attract so I am confident it is silver. It was also extremely tarnished when I found it and I have used silver polish to bring back it luster. The diameter across is 5.5 inches