Sep 16 Antique Seth Thomas’Working’ Mantel Clock with Pendulum. Magnificent Condition POSTED BY admin IN antique Antique 1910 (era) Seth Thomas Mantel Clock w/ Pendulum, 48N, Excellent Working and Overall Condition, Particularly for its Age, All Glass Panels are Free From Cracks and/or Flaws, 11″(H) x 6.5″(W) x 5(D) Approximate. Tags : antique | clock | condition | magnificent | mantel | pendulum | seth | thomas'working'