Jul 14 Antique 8 Day Seth Thomas Shelf Mantle Clock Working + Alarm With Built In Level POSTED BY admin IN antique Antique 8 Day Seth Thomas Shelf Mantle Clock Working + Alarm W/ Built In Level. This clock is in beautiful condition with just minor wear to the finish. It runs and chimes, This clock measures about 23 1/4″ x 15″ x 4 deep. Tags : alarm | antique | built | clock | level | mantle | seth | shelf | thomas | working