Long leader with a slot unknown brand clockwork. Approx. 7 1/4″ or 18 cm long. Center Slot is approx at 4 1/4″ or 11 cm. Lower slot is at 6″ or 15 cm. We think it is Kieninger, or Gustav Becker clockwork. If somebody recognise it and knows exactly what clockwork it is for please let me know. I appreciate it.