925 Sterling Mexico (and let me tell you , it was tough on my eyes to make that out) and the bottom does have a loop but does not appear anything hung from it. No wear in the hole. Mirror image of the top loop for the ear hook. Could have been an item made to be used for bracelets or something could have hung but if it did, it did not hang for long or never at all because there is no wear to the loop or the backside of earrings. Thanks for asking