Authentic Lagos, Sterling silver 925 marked on the inside - couldn’t get a good image of it. Posts were removed by a jeweler and can be added again - this is reflected in the price. If this is something that makes you anxious, I can have the jeweler I use put new posts on before sending to you - contact me to discuss! Worth mentioning - I’ve worn them as they are, comfortably, for an entire day - and I hate most clip ons because of how painful they are. They’re not that heavy so it works if you want to try that first!