Vintage Waltham CS31 – thewatchpreserve。Vintage 35mm Waltham CS31 Men\'s Automatic Wristwatch PUW 1561 USA Chrome Plated Product Description Item: Wristwatch Brand: Waltham Reference: CS31 Movement: Automatic Case Material: Chrome Plated Country: USA Gender: Men\'s Caliber: PUW 1561 Size: 35mm Product Measurements Diameter: 35mm Lug Width: 18mm Tip to Tip of Lugs: 39mm Thickness: 12mm Product Condition Fair, overall condition for its age. Running, but it will need serviced. This means, it can run unreliably, start or stop and timekeeping is not guaranteed. There are scratches on the case. There are scratches on the crystal. There is light discoloration on the dial. Amplitude is decent in the low 200\'s but timekeeping and beat error are irregular.