I have recently bought this Beker and would like to know the date of this clock. Regards, John
John, based on the serial number your clock was made in 2nd quarter 1906, the same time that the patent DRP 171659 was granted. This is the earliest clock with that patent identified that I have documented to date.
For info, Kochmann's serial numbers apply ONLY to clocks made in the GB Freiburg factory, and after 1900 are NOT accurate. For that period they are based only on four clocks and used sales receipts which cannot be assured were the first sale. If anyone wishes to date their GB clocks, go to this thread where I have posted accurate dating tables for both Freiburg and Braunau clocks:
Look for Post #80 in this thread.
It will be much appreciated if you could post photos of the complete clock front view, dial, etc for full documentation. This appears to be the movement for a freischwinger, spring drive, but can't tell for sure. Thanks in advance for your help.