I recently purchased this necklace off eBay and am now starting to worry that this is not a true antique deco piece given the markings along the sides of the bezel and also the fact that it has a lobster claw closure which I just read is a later invention from the 1950’s. The seller said it is from the Art Deco period and not reproduction and did not note any repairs (altho I did not ask specifically about the repairs). She has 100 percent 5 stars on eBay for what it is worth but when I looked up her company (listed on PayPal address), I did find a few complaints about the quality of her items but also some very glowing reports. I did look at a few other necklaces claiming to be from the Art Deco period on eBay that did have lobster claws but they could also not be truly from the period. Does anyone have insight to this? Will likely get necklace appraised if it looks pretty enough when it arrives.