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What service history proves
Dated invoices can show when work occurred, who performed it and which components were replaced. Manufacturer records may also help connect a serial number to authorised service activity.
Records support history, but they do not guarantee present condition. A watch serviced years ago can still require work, while an undocumented watch may be functioning well.
Be precise about what is unknown
Say whether the watch was inherited, bought used or serviced without paperwork. Avoid converting family recollections into firm dates or claiming a movement is untouched when it has not been inspected.
Photograph any service pouch, replaced component or warranty card you do have. Partial evidence is more useful than a confident but inaccurate story.
How a buyer assesses the gap
The reviewer considers timekeeping, winding, setting, power reserve, complications and visible condition, then confirms function during physical inspection. Some watches require specialist testing or manufacturer service.
Expected service cost, parts availability and the risk of hidden problems can affect an offer. The effect varies by reference rather than following one fixed deduction.
Why servicing first may not help
An expensive service may not be recovered in the selling price. Polishing or replacement of original components can also alter collector value, particularly on vintage pieces.
Begin with an as-is assessment. If servicing would materially improve the transaction, the reasons and likely trade-off can be discussed before you spend money.
Guide content is general information. A direct-purchase quote is based on the details and photographs you provide. If a material difference is found, we contact you before any change is made.