A used-watch purchase has several separate questions: is this the item described, is the seller credible, does the serial show a report in a checked source, and are the condition and price acceptable? Work through each instead of expecting one document to answer all of them.
Identify the actual watch
Get current photos, inspect the serial safely, and record the model or reference separately. Note visible condition, parts, and accessories. Match the serial across the invoice, service records, and any papers.
Assess the seller and provenance
Confirm who owns or represents the watch, check the payee, and ask for a coherent purchase history. Box and papers can support a record but do not prove clear title on their own.
Run the right checks
Search the verified serial in a theft-status service and understand the result's date and coverage. Arrange an independent authenticity and condition inspection when warranted.
Write down the deal
The invoice should identify the watch, price, condition, and return terms. Read the payment and marketplace rules before sending funds. Stop if key information remains unavailable or inconsistent.
Start with the Serial Check
Use the confirmed individual identifier and keep the result with the seller and invoice records.