Because serial numbers are hard to date, Kienzle heavily used (Deutsches Reichspatent) and D.R.G.M. (Deutsches Reichsgebrauchsmuster—similar to a utility patent).
A: Not necessarily. Low serial number (e.g., #882) means it is old (1880s). Value depends on condition, originality, rarity of the case, and if it runs. A working Vienna regulator with a low serial number is worth $300–$1,200. A common 1950s box clock with a high serial number is worth $50–$150. kienzle wall clock serial number
Use a flashlight and a magnifying glass. Stamps from the late 1800s are small and can be hidden under 100 years of dust and oil residue. Because serial numbers are hard to date, Kienzle
This is the "Golden Age" for most Kienzle wall clocks found today. Low serial number (e
If you see a patent number, Google it. If the patent was filed in 1921, your clock was made in 1921 or later, regardless of what the serial number seems to imply.
The evolution of the Kienzle logo is one of the most reliable ways to narrow down a production window:
However, we can estimate the age of your Kienzle wall clock by combining the serial number with design elements. Here are the general eras: