This is lovely very vintage hand made modernist era wire choker necklace . This piece is hand made and unmarked..I believe it’s sterling silver wire ..very common that the wire would be unmarked and artisan made. It’s for a smaller petite neck . It’s in lovely wearable vintage condition with minimal signs of wear consistent with age..with no issues..it looks good ..maybe it could be polished..but I left it with some patina . It measures 11 1/2 inches from end to end ,is about 3/8 of inch wide on the neck part and weighs 22.5 grams. Please refer to the pictures and thanks for looking.