Made in about 1929 for A.L. Loomis of Tuxedo Park, New York, NY, U.S.A.
In the collection of the late Mr. Cliff Haumiller, Elgin, Illinois, U.S.A.
Sold at auction by Dunnings of Elgin, Illinois, 1 November, 1987, lot 116
The Cleator Collection, Vancouver, BC
F. Hope-Jones, Electrical Timekeeping, 2nd. ed. 1949, N.A.G., pp. 166-174, 185-6, 201, 213, fig. 106.