Portero is the world's leading and most trusted online marketplace for the finest in pre-owned luxury items. We unconditionally guarantee that every item we sell is 100% authentic.

In addition to our own expert team, Portero partners with many of the top brands and dealers to ensure that all of the products we handle are authentic. Along with the unconditional Portero guarantee, watches that are listed as "Tourneau Certified" are guaranteed as authentic and in working condition by Tourneau, the world's largest watch store. Tourneau has been in business since 1900 and markets over 100 different brands in more than 8,000 unique and incomparable styles. Tourneau is authorized to sell and service every major watch brand. Tourneau certifies to the purchaser that this timepiece was originally manufactured by the company whose trademark(s) it bears and that the watch is in working order.*

*Replacement parts may have been utilized for maintenance. Portero's and Tourneau's liability under this certification shall not exceed the amount paid by the purchaser at this auction. All claims under this certification must be made within 30 days from the date of purchase from Portero.