The markings within this clock show that it is "The Standard" marketed by E. O. Hausburg, N.Y.C. Internal markings (a trademark consisting of an escape wheel with
superimposed pallet fork) reveals its manufacture by J. Schlenker-Grusen. This is very much like
I.D. 11, but is fully identified by these marks. It was the third portable clock listed by Underwriters' Laboratories, Inc., and was sold in the New York area in respectable
quantities by E. O. Hausburg from c.1904 to the early 1930s. The Standard came in several station capacity sizes, 6 stations, 9, 12, 16, and 24.