This is an exceptional example of the Cartier Tank Louis, a timepiece that stands as an icon of 20th-century design. This specific reference, the 78086, represents a desirable vintage era, embodying the pure, rectangular artistry that defines the Tank line. 

• Reference: Cartier Tank Louis Cartier, Ref. 78086. This reference is sought after by collectors for its classic proportions and vintage appeal. The low serial number puts this watch near the beginning of production, circa 1973.   
  
• Paris Dial: The dial is signed "CARTIER PARIS"  
• Original 18k Gold Deployant Clasp: The watch is paired with its original 18k Yellow Gold Cartier-signed deployant buckle, an important and valuable component for collectors that often goes missing.  
• Signature Cartier Details:  Features the classic blued steel hands and a sapphire-set winding crown. 
• Case: The 18k yellow gold case remains in excellent vintage condition with sharp lines and retaining its original proportions. Measures 23mm x 30mm. Case back engraving and hallmarks remain clear. 
• Dial: Clean classic white dial with black Roman numerals, showing the desirable Paris signature. 
• Movement: Powered by a thin manual-winding mechanical movement, which is running well and keeping time. 
• Strap: Fitted with a black Cartier strap, which is fix-sized.  
• Service history: Serviced in 2022 by Cartier (review as this is part of item description)
  
• Cartier service letter copy is incorporated as part of item description