Seth Thomas Antique Adamantine Mantel Clock

This is an antique Seth Thomas “Adamantine” mantel clock, featuring a black celluloid veneer over a wood case, produced between roughly 1882 and 1917. The clock features an 8-day time and strike movement. It is known for its distinctive faux marble or onyx finish and decorative brass columns and feet. The “Adamantine” veneer was patented on. These clocks are popular among collectors due to their quality craftsmanship and historical significance.