Jan 07 Vintage Antique Seth Thomas Ships Clock, Chelsea, Maritime, Running 3 1/4 POSTED BY admin IN vintage It is 3.25 inches with a depth of 1.75. Made by the renowned maker Seth Thomas, this clock is a unique piece of maritime history that would be a valuable addition to any collection of antique marine artifacts. Tags : antique | chelsea | clock | maritime | running | seth | ships | thomas | vintage