Serial number matches on all parts of the case as well as the movement. I haven¢â‚¬â„¢t dismantled the movement, but I have seen identical Swiss movements that are made by Agassiz, so I¢â‚¬â„¢m confident that company also made this watch¢â‚¬â„¢s movement. The watch is 18k gold and weighs 75 grams total and is approximately 44 mm wide.. Condition: Pre-owned - Good: This item has been gently used but is in good condition. It might have a few signs of wear, like light scratches or tarnishing. All imperfections should be shown and described in the seller¢â‚¬â„¢s listing. ,Movement: Mechanical (Manual),Water Resistance: Not Water Resistant,Closure: Open Face,Seller Warranty: Yes,With Papers: No,Vintage: Yes,With Service Records: No,Personalize: No,Brand: Tiffany & Co.,Case Color: Yellow Gold,Type: Pocket Watch,Department: Unisex Adults,Customized: No,Dial Color: White,Style: Luxury,With Original Box/Packaging: No,Features: 12-Hour Dial,Case Finish: Polished,With Manual/Booklet: No,Case Material: Yellow Gold,Country of Origin: Switzerland,Display: Analog