Lost the other one to this pair in a hotel! Ugh. There’s a mark on the earring post with Tiffany’s stamp of authenticity. It was very difficult to photograph & enlarge…I have jewelers loop but idk where it is! Purchased at Heathrow during a layover from the small Tiffany store there, 2011? In great shape but there’s silver tarnish commensurate with age. I’ll leave that to the buyer to choose to clean. Original back marked 925. No box…sold that already on PM!