This lovely key is genuine, purchased by myself from New York around 10 years ago, it’s sterling silver, 11.4 grams in weight and 6.5 cm long including the jump ring at the top, I’ve worn it loads it could do with a polish. That would bring it back to like new condition, a jeweller would do that. No orginal packaging sadly. Lost in house moves, just the key is for sale, no longer offered for sale in the uk. I only sell genuine items.
eBay