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.

J. Schlenker-Grusen movement and nine marking tumblers

No clocks that have been found that contain indications of sale by Hausburg show trademarks or other evidence of manufacture by a maker other than J. Schlenker-Grusen.  Hausburg sold four different models, all with model names:  The Rival (a copy of the Imhauser clock); The Excelsior (probably a duplicate of the J. E. Buerk design and of the Amerikaner by Bürk); The Numeral (a design that marked the dial through carbon paper); and  The Standard, as illustrated here.  Only The Standard was listed by Underwriters' Laboratories, Inc.