ATO Clock Battery Adaptors.

ATO and Bulle clocks used battery with special contacts, Leon Hatot included a list and graphic to demonstrate his, some could be used in Bulle clocks also. The long black and green labeled case could be used in both. The black and silver cases were specific to ATO clocks that have clamp movements in their case. The third picture shows how the batteries fit into the adaptors. The black and green adaptor features a voltage regulator. The other two are standard 1.5 volts. The fourth picture shows the battery adaptor in place in the clock. I do not have these for all my clocks, most of them have alligator clamps running from a battery compartment.