Helbein-Stone Company Inc was incorporated 1919, manufacturing jewelry, $220,000 in Manhattan. Wm Helbein , N. Schwarzstein, N. Schwarzstein, Jr. Hotel Schuyler Arms, New York City. The earliest mention of "Helbros Watches"is from 1925.
On the 11th of August 1963, Elgin National Watch Co announced the acquisition of the Helbros Watch Co by Henry M. Margolis. Helbros will operate as a division of Elgin with Larry Prigozen remaining as president