Your piece belongs
where collectors look.
We built Winwin for jewellery, watches, gemstones and rare objects the larger houses overlook, and the audience that's been waiting for someone to take it seriously.
Three reasons it just works.
No upfront costs.
Photography, cataloguing, marketing — all carried by us. We earn only when you do, with a transparent commission disclosed before consignment.
Expert presentation.
Studio photography, a written specialist note, and a thorough condition report. Your piece arrives at the auction floor properly dressed.
The right audience.
A registered, vetted bidder base of European and international collectors who come to us for curated auctions of jewellery, watches, gemstones and objects of value.
Four steps. Start to finish.
Submit your piece
Fill in the form below or use our valuation tool. Photos of hallmarks, signatures, settings, stones and any paperwork are ideal — but we work with what you have.
Free specialist assessment
Within 48 hours, a Winwin specialist comes back with an indicative estimate range, a proposed reserve, and our suggested commission.
Catalogue & auction
Once you've signed off, we collect (or you ship insured), photograph, write the catalogue entry, and present the piece in the next available sale.
Payment within 30 days
Once the buyer settles, funds are with you within thirty days of hammer. Wire transfer to a Swiss or European account, in CHF or EUR.
Submit a piece
Tell us a bit about the piece. We'll come back within 48 hours with an indicative estimate.