These clocks were sold as genuine American antique clocks, but were actually Japanese copies. There were smaller drop octagon clocks (schoolhouse clocks) and other styles. They have a label on the back saying "Pony Express" and guarantying the authenticity of the clock.
This article is from the January 245, 1979 Lansing (Michigan) State Journal.
This document is shown for the historical record, it is not for sale.