Very rare Longines "Platinum and Sapphires" men's dress pocket watch in solid platinum with blue sapphires, circa 1920.

This fantastic and very rare Longines dress pocket watch has a heavy solid platinum case with a caseback inlaid with about 85 French-cut blue sapphires. The case contains almost a full troy ounce of pure platinum. It is in excellent condition showing light wear and some light scratches and scuffs to the caseback. Caseback has a monogram. Inside of caseback is marked in French "Platine Pur" for pure, unalloyed platinum. Case measures 45mm in diameter. Original enamel inlaid dial is excellent. Glass crystal is superb. The watch has a 15-jewel Longines grade 10.85N manual wind movement, just serviced and running strong.

Price $1,300.