How do you date a Gruen wristwatch?

To date a Gruen wristwatch, look for a serial number on the back of the timepiece. Present on many of the maker's watches, this number can be cross-referenced with trusted online databases to determine roughly when your watch was produced. If your timepiece has no serial number, you can research the caliber number on its movement. Should you still find yourself unsure of the age of your watch, consider consulting a certified appraiser or experienced dealer. On 1stDibs, shop a diverse assortment of Gruen watches.