Our watch authentication partners at Stoll & Co. have earned their leading industry reputation. The team at Stoll & Co. are watchmakers and skilled professionals who have the experience and knowledge to ensure your watch is authentic.

In some cases, the reference number is engraved on the case. For example, reference numbers for Rolexes sit between the lugs at 12 o'clock. To see it, you have to remove the band. Other manufacturers may place it on the case back or, in rare cases, on the dial itself.