Antique WALTHAM (A.W.W.Co. Waltham, Mass.) 12 size "Riverside" movement # 7158XXX (c. 1895) "Wadsworth" Quality case # 7558XXX, 10K White Gold Filled. This watch has been RESTORED by a professional watchmaker by completely disassembling the movement, removing the balance hole and cap jewels, replacing the "set" mainspring with a new lifetime white alloy spring, assembling the movement and oiling and adjusting it. The watch is keeping accurate time. The dial is a porcelain dial with some hairline cracks at the "37" marker. The white gold filled case doesn't show any wear, there is a small dent on the back.