Swarovski 15/56 SLC. They have been used quite a bit for the 4-5 years I’ve had them, some normal scuffs on the protective coating and a slight ding on one of the objective lenses but the glass is flawless. If you sent them back to Swarovski to get cleaned/serviced they would fix for free or possible minimal cost which is why they are priced accordingly. Been a great piece of glass and no scratches in the lenses. Kept in case other than when being used. Text 480-319-2049