VACHERON CONSTANTIN LES COMPLICATIONS REF.43031 IN YELLOW GOLD - From 1985 Reference N° 43031 Serial N° 569127 Year: 1985 Material: 18k yellow gold Weight: 57g Dimensions: 35mm Caliber: Automatic cal. 12' 1120 QP Crystal: Sapphire Bracelet: Leather with 18k yellow gold Vacheron Constantin buckle Accessories: Extract from the Archives, original leather pochette and over box; and service from Vacheron Constantin dated 2020 Very well preserved perpetual calendar by Vacheron Constantin, this watch shows a rare yellow gold hands configuration confirmed originally delivered by Vacheron Constantin, the normal hands was blue. Currently working.