Vente aux enchères - Antiquorum N°98 - 20 mai 1997 - Lot N°156
Girard-Perregaux, GP 90, Ref. 1020, No. BR-77.
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Self winding, waterproof, 18K yellow gold and stainless steel gentleman ' s wristwatch with date and power reserve indication, "guilloche" dial. Diam. 38 mm.