This Jahresuhrenfabrik (German for “Year Clock Company”) 400 day clock has the serial number 112975 on the back plate and was made around 1912. The diameter of the dial minute track is 2.5 inches. (Earlier clocks often have a smaller dial, whereas later, 1950s clocks have a larger dial, typically with a 3 9/16 inch time track.)
Identification of clock/watch models and makers and when they were made. Electronic - works with a pendulum. Electronic clock from Kundo Functioning needs to be checked. Immaculate condition, missing two feet.
There are numbers and dots on various parts that may relate to batches of movements being made. Both plates have “39” and “4” stamped on the inside. The minute wheel cock and minute wheel both have “39”. The barrel, cap and arbor all have “39” on them. Wheels T2 – T5 and the hour wheel have 3 dots and a “7” on them. Can anyone explain these markings?
This movement has an early example of a guard for the suspension spring, with a brass cover on the bottom for shipping.
Here is a movie of the clock:
Here is a slideshow of more photos (click near the bottom of the photo to start the show):
Jahresuhrenfabrik became Aug. Schatz and Sohne around 1950. Their clocks almost always have a one-piece anchor in the escapement (as opposed to the anchor with adjustable pallets used by most makers).
Repair job 5206. Horolovar back plate no. 1349. 0.004 inch thick suspension spring. Suspension unit similar to 6789A but slightly longer so that pendulum doesn’t look too high above base. I would have liked it to be longer for the pendulum to be lower, but then too much would have been protruding for the suspension guard cap to cover.
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.Model #519 –Serial numbers that range from 25,000 to 59,000 were placed on clocks that were made in the late 1940s to 1950s.Model #522 – The serial numbers are in the 60,000-69,999 range and were made in the 1950s.Model #526-5 – Serial numbers fall between 70,000 and 107,000. These models were made in the 1950s.Model #526-6 and #528 – This is a wide swath of serial numbers that range from 107,001 through 599,999. They were made over two decades between 1960 and 1980.Model #540 and above – These have serial numbers in the 600,000 range and higher.
These models were made from 1980 to 1998. Model #532 – The serial numbers are unknown for this Atmos clock model.Where to Find the Serial Number.
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March 2023
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