Metal-front and metal-case clocks became more common in the U.S. after the mid-iSsos as more foundries opened. Until then, wood had been the primary material for clock cases and works. Metal cases were commonly molded with elaborate designs and then painted or gilded.
Ansonia metal front mantel clock, gilded case, porcelain dial, eight-daytime & strike, 7 1/2 x 10 1/2″ h. $275.