Antique 16S Locle Albert Duval Hunter Pocket Watch Case for KeyWind Coin Silver. Item: Pocket Watch Case Brand: Locle Model: Albert Duval Movement: KeyWind Case Material: Coin Silver Gender: Men’s. Inside Diameter: 43.5mmmm Outside Diameter: 51.5mmmm. Ok, overall condition for its age. There is discoloration, dents and scratches on the case. There are scratches on the crystal. The crown is worn.