Posted 4 years ago
This is an original Leon Hatot ATO clock from the early 30's. The face, or dial of the clock features his trade mark ATO (middle three letters of his last name) and the spider webbing in the middle of the dial. The dial is made out of pewter the numerals on the dial are gold plated as is the movement cover in the back (not pictured).
ATO clocks are battery operated and were the pre-cursor to our modern quartz movements. It has a magnetic pendulum that swings through electrically charged coils that cause it to swing and run the clock. The battery compartment for this clock is still intact and has not been updated, I will leave it and order a replacement battery from Time Savers (yes, the batteries are still manufactured). The movement has Leon Hatot's logo stamped on the movement. The pinkish orange discoloration on the movement is from on of the original batteries used in this clock during it's lifetime. ATO clocks are low voltage clocks and use 1.5 volt batteries, they have been known to run for four to five years on one battery, in some cases the battery has been known to break down and leak while the clock is still running, unlike our modern quarts movements.
Leon Hatot is known more for his jewelry designs than for his clocks.
Hatot also designed the first self winding watches, that work on the movement of the owner's arm. Swatch now owns his original copyrights and patents.