Dating hamilton watch models
In 1867 he went to America and settled near Columbus, Ohio.
A hard-working young man, Dietrich was awarded his first watchmaking patent at age 27, in 1874.
Like the Curvex, the Veri-Thin was developed to fill fashionable watch case shapes.
In the 1940s, Gruen started building Veri-Thin completely in the U.
S., setting up a new factory in the Cincinnati area.
After World War II, the American watch industry began to decline.
Curved watches became popular in the 1930s, and Gruen’s Curvex movement curved to fit the watch; Gruen’s watches could be thinner and more curved than competitor’s watches with flat movements inside.
Later, they would build their own movement factory in Switzerland. Pocket watches in the late 1800s were large and heavy.
At 29 he co-founded the Columbus Watch Manufacturing Company; the successful enterprise was soon building complete watches in its own 300-employee factory buildings.
Fred, Dietrich’s oldest son, was born in 1872 and followed in his father’s footsteps.
In his youth Fred worked in his father’s factory, then was sent to Germany to study watchmaking.
To graduate, Fred was given bars of metal from which he had to build working watch movements, designing and manufacturing all the parts.