A defensible valuation begins with evidence, not a brand and an age. This worksheet identifies which parts of the research file are present and which gaps could materially weaken a price conclusion.
What a complete research file contains
Identity evidence establishes the exact object: reference, movement, configuration, approximate period, and relevant identifiers. Component evidence distinguishes original-to-watch pieces from service, period-correct, refinished, aftermarket, and uncertain parts. Condition evidence records each major component rather than collapsing everything into “good.”
Provenance evidence may include the original guarantee, receipt, service invoices, archive material, dated photographs, presentation documents, and a coherent ownership history. Comparable evidence should use completed transactions with the closest available reference, configuration, condition, completeness, geography, and date.
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Completion does not authenticate the watch or produce a valuation. It indicates research readiness. A rare or disputed watch can remain low-confidence even when every box is checked because the surviving evidence may be ambiguous or no close transaction exists.