Gents Waltham "Ruby" pocket watch in platinum. With Sub-Seconds. Case size 42 mm. Circa 1915 Fine Pre-owned Waltham Watch. Certified preowned Vintage Waltham Classic watch is made out of Platinum. This Waltham watch has a 42 x 42 mm case with a. It is Gray and Sons Certified Authentic and comes backed by our 12-month warranty. Each watch is inspected by our certified in-house Swiss-trained watchmakers before shipment including final servicing, cleaning, and polishing. If you have inquiries about this Waltham Classic watch please call us toll free at 800-705-1112 and be sure to reference W518855.