Antique 1920’s Seth Thomas Adamantine Mantle Shelf Clock

This Seth Thomas Mantle Clock features a dark mahogany finish and is designed in the tambour or “napoleon hat” style. Clock is 16.25″ wide at base and 9″ tall. Working condition when wound up. (See videos) Just not sure if the number of “dongs” is correct. It is likely from the early 1900s to 1920s and may have an 8-day mechanical movement. Similar models often feature time-and-strike functionality, though they may require a winding key to operate. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. Condition as shown in photos. There is one knob foot missing from the bottom. Includes pendulum bob and key. Has personal inscription on the back door showing that it was a gift given in 1921.