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Atkins Clock Co. “Octagon Drop XX”, 1859-1879. Gregory & King (The Clocks of Irenus Atkins) describe this as a rare model with an unusual 8-day spring-driven movement, but there are several examples on LiveAuctioneers, selling for around $100. The 24.5-inch case is veneered in flame mahogany with an old and slightly crusty finish. Both glasses are old and the pendulum door tablet has been rebacked. The dial is repainted with the proper period hands. The 8-day, time-only movement is unsigned and a bit unusual, as it looks like it has been turned sideways; it is running without problem. There is a good label inside. $75–$150.