Portfolio tracking
Add each watch with reference, year, condition, set and purchase price. See total value, cost basis and unrealised profit and loss at a glance.
Track every tick.
Chronostats values your watches against real market listings every month and shows you your entire portfolio.
Free for collectors. No credit card required.

What you can do
Add each watch with reference, year, condition, set and purchase price. See total value, cost basis and unrealised profit and loss at a glance.
Estimates are built from real dealer and private listings, adjusted for condition, year and box & papers, and refreshed as the market moves.
Upload a photo and get the brand, model and reference identified, together with a first value estimate.
Follow price trends per reference, see how dealer and private prices diverge, and understand where the market is heading.
Connect with collectors and dealers you trust, share selected pieces with your network and discover watches that match your interests.
Post what you are looking for and receive offers from your network, or respond to other collectors’ requests.
How it works
Enter the reference or upload a photo. Add purchase price, condition and what came with it.
Chronostats compares your piece with comparable listings and calculates a realistic asking price.
Watch values and profit and loss update over time. Decide when to hold, sell or add.
Watch values
Current market values for the references collectors ask about most.

Rolex
Datejust
Ref. 126334
€13,800
132 listings

Rolex
Datejust
Ref. 126300
€10,700
81 listings

Rolex
Submariner
Ref. 126610LN
€13,800
81 listings

Rolex
GMT Master II
Ref. 126710BLNR
€16,500
53 listings

Rolex
Submariner
Ref. 126610LV
€14,200
45 listings

Rolex
Submariner
Ref. 124060
€12,550
44 listings

Rolex
GMT 2 - Pepsi
Ref. 126710BLRO
€21,000
41 listings

Rolex
Submariner
Ref. 126613LB
€18,100
30 listings

Rolex
Cosmograph Daytona
Ref. 116500LN
€25,445
24 listings
For dealers
Manage stock, publish watches to your website, send newsletters to your clients from your own domain and collect sign-ups with an embeddable form.
Pricing
Free
Portfolio, valuations, identification, insights and your network.
Create free account€99 / month
or €990 per year
Everything for collectors, plus inventory, newsletters, sign-up forms and custom domains.
Start 30-day trialYes. Tracking your collection, valuations, identification and insights are free for collectors. Only the dealer tools are a paid subscription.
We analyse asking prices from dealer and private listings for each reference and calculate a monthly median, adjusted for condition, year and completeness of the set.
Only you, unless you decide otherwise. Each watch can be private, visible to your connections, or public.
You can add any watch. Market valuations are available for the most traded luxury brands, and coverage grows every month.
Add your first watch in under a minute and see what your collection is worth today.