No tags. I scrubbed the bottom of the mugs to get the “sticky” stuff off before I knew what these were. Fortunately I was unsuccessful on one of the mugs, and you can still see the outline of where the old Gregorian sticker was. 100% copper. Collectible item. Beautiful set. No dents or flaws. Patina only that can be cleaned if desired. Message me or comment if you would like to purchase less than 4.