The lantern-style clocks were trendy with their four beveled glass installed between four tiny brass posts fixed between a brass base and a top, sometimes richly decorated. It was prevalent in France from the 18th to the early 20th centuries. The American had a name for it, Crystal Regulator. The Ansonia flip-flop cards clock was a four-glass lantern. Illustrated: a glass and polished gold finish brass case of a Seth Thomas Crystal Regulator, the Empire no. 1 (1909), with a false mercury pendulum.
