Unique oval shaped chain necklace- delicate statement piece, wear long or double

This is a unique piece that may be vintage. Oval shaped chain necklace- delicate statement piece. Very lightweight. Can be worn in a long, single strand or doubled-up. Measures approximately 26” (doubled) when laid flat. This necklace does not have a clasp. From a smoke-free, (currently) 😢 pet-free home. I strive for same day shipping, but sometimes it’s next day due to my work schedule and USPS hours.