Patina AI · Dealer OS

The AI operating system for watch dealers.

Price every watch from real sold data, track cost and profit on one record, and sell across your marketplaces—with an AI agent doing the legwork. On the web at your desk, on iPhone everywhere else.

Download Patina AI

20 seconds from a photo to the market price—then a few taps to a live eBay listing.

Dealer OS inventory table with portfolio market value, cost basis, unrealized P&L, days held, and status for every watch.
Review a Tudor Black Bay 58 buy decision with market pricing and a maximum purchase price.
50,000+
watch references, from vintage Seiko to modern Rolex
20 sec
from photo to identification and valuation
1,100+
dealers, collectors, and resellers using Patina AI
2,000+
watches scanned and tracked

The problem

Dealing watches shouldn't take six apps.

The same watch is a photo in your camera roll, a row in a spreadsheet, a listing in a seller dashboard, a payout in an email, and a cost you meant to write down. None of them agree on what it made.

  • The research takes longer than the deal

    Cross-referencing forums, listings, and reference guides takes hours you don't have at the counter.

  • Asking prices aren't real prices

    A listing tells you what a seller hopes to get. Without sold activity and a market range, your margin is a guess.

  • Your numbers live in four places

    Purchase price, service costs, marketplace fees, and sale proceeds never meet, so you never really know what the watch made.

Price. Track. Sell.

One watch record carries all three. Nothing gets retyped, and every cost you put into the watch is still there when you price the sale.

  1. 01

    Price it.

    See what dealers actually paid: low, typical, and high from sold comps, with the confidence and the number of sales behind it.

    Watch market view with low, typical, and high sold prices, a suggested list price, confidence, and a chart of recent sales.
    Price it.
  2. 02

    Track it.

    Every watch with its cost basis, market value, unrealized P&L, and days held—and the ones that need attention surfaced for you.

    Dealer OS inventory table with portfolio market value, cost basis, unrealized P&L, days held, and status for every watch.
    Track it.
  3. 03

    Sell it.

    List on eBay from the watch record, and keep every listing, offer, and order in one view. When it sells, fees and cost basis flow into your net profit.

    Dealer OS selling view grouped by watch, showing the marketplaces each watch is listed on, its highest ask, and its status.
    Sell it.
01

Priced on what watches sold for, not what sellers hope for.

Every market price shows its work: the sold comps behind it, how many there were, and how confident the data is. From there Patina AI gives you a list price that already covers selling fees.

  • Sold comps
  • Confidence and sample size
  • Fee-aware list price
Explore market intelligence
Watch market view with low, typical, and high sold prices, a suggested list price, confidence, and a chart of recent sales.
02

An agent that does the listing, not just the talking.

Ask Patina AI to list a watch and it checks the record, reads the sold comps, and stages the eBay listing with your saved shipping, payment, and return policies. You review the price and the details. Nothing goes live until you approve.

  • Reads your records
  • Shows its evidence
  • You approve every action
See what's included
Patina AI panel beside a watch record, showing the sold comps it checked and an eBay listing staged for approval.
03

Bring Patina into the AI you already use.

The Patina MCP server connects Claude, ChatGPT, Cursor, and other assistants to Patina's market data and, where your membership includes it, to your own inventory, listings, and sales. Ask for a price, a comp set, or last month's net profit from the tool you already work in. You choose what the assistant can read when you connect it.

  • Market prices and comps
  • Your inventory and sales
  • You control access
See what's included
04

One watch, every place you sell it.

List on eBay in one tap and keep it in sync. Share a Patina sell link with a buyer directly. Track listings and sales from your other channels beside them, so each watch shows where it is listed, what it is asking, and what it made.

  • eBay listing sync
  • Patina sell link
  • Every channel on one record
  • eBaySynced
  • ShopifyComing soon
  • WhatnotComing soon
Explore selling
Dealer OS selling view grouped by watch, showing the marketplaces each watch is listed on, its highest ask, and its status.
05

And an iPhone app for when the watch is in front of you.

Point the camera at a watch and get the reference and the market price in about 20 seconds. Work back to the most you can pay, run Replica Check, add it to inventory, and list it before you leave the table. Everything lands on the same record you see at your desk.

  • Identify from a photo
  • Replica Check
  • List from your phone
Download Patina AIExplore scan and appraise
Review a Tudor Black Bay 58 buy decision with market pricing and a maximum purchase price.

One system for the whole watch.

Nine jobs on one watch record and one set of numbers.

Built for dealers. Used by collectors and resellers too.

Start with the work you do most. Every path runs on the same watch record.

01

Run the business from one desk.

Inventory, listings, orders, and net profit on one screen at your desk, and the same records on your iPhone when the next watch arrives.

For dealers
02

Understand the collection and the next acquisition.

Use collection records to preserve what you own and its history, then bring market context to the next decision.

For collectors
03

Protect the margin from buy to sale.

Spot the opportunity, prepare the listing, and keep the completed result connected to the original buy.

For resellers

Follow the watches, workflows, and releases.

See new watch finds, practical product walkthroughs, market signals, and release notes from Patina AI.

Instagram@usepatinaaiTikTok@patina.ai

Straight answers before your next deal.

The product supports your judgment with connected records and context. Open any question for the practical answer.

Who is Patina AI for?

Patina AI is built for watch dealers and resellers who buy and sell regularly, and for collectors who want a clearer record of a watch from evaluation through sale.

Do I need the iPhone app to use Patina AI?

No. Inventory, market prices, selling, orders, and the AI agent all work on the web. Photo identification and Replica Check need the iPhone camera.

Which marketplaces does Patina AI work with?

eBay listings are created and synced from Patina AI. You can also share a Patina sell link and record listings and sales from other channels so every watch has one history.

What is the Patina MCP server?

It lets an AI assistant such as Claude or ChatGPT read Patina market data and the parts of your account you approve, so you can ask about prices, inventory, and sales from the assistant you already use.

How does market intelligence help with a buy decision?

It puts an asking price beside market range, trend, confidence, and deal-model inputs so you can judge the offer in context.

How does Patina help prepare a listing?

The selling workflow carries watch details into a listing so you can review listing information, offer controls, and channel state. The completed-sale record stays connected afterward.

What does the Timegrapher measure?

It uses audio from the movement to estimate rate, amplitude, and beat error, and it keeps readings available for review over time.

Is Patina a substitute for a professional authentication or service inspection?

No. Patina provides decision support and measurement context. Use qualified professional judgment when authenticity, condition, or service needs matter.

Run the whole watch business from one screen.

Price, track, and sell every watch at your desk—and pick it up on your iPhone when you're not.

Download Patina AI