Both luxury multi-brand e-tailers will debut the collection in the US with 15 new brands and 108 models, including limited edition and rare discontinued time pieces. The collections will launch across both of the retailer’s sites, and in-house specialists will provide a personalised recommendations service as well as virtual one to one appointments for customers.

As part of the tie-up, Mr Porter (but not Net-a-Porter) will offer e-store credit in a part-exchange service for watches, available for UK and US-based customers. Watchfinder’s team will also authenticate and prepare the pieces, which come with a 24-month warranty from the company.

The move comes amid continued growth in the secondhand luxury watch market, which represents 27 percent of all watch sales. It is expected global sales will total $29 to $32 billion in 2025, which will total more than half the value of the primary market.