Cifra 12
You say that yours need two alternating impulses to advance the clock one minute ?
e.g. impulse - pos 6 volts, click, neg 6 volts, dial flips, pos 6 volts, click, neg 6 volts dial flips ?? like that ?
That could be a set up for probably a French clock system, some of those use 30 seconds impulses.
Can you make a close up of the actual actuator? which drives the white odd shaped wheel with the 10 curved notches ?
If the actual drive has 1 pin than it is set up for the 30 second pulse.
Can easily be made to accept 1 minute pulses if the wheel has the second hole (which is not used in your case).
There should be a second hole to add an other pin, which makes it suitable for 1 minute impulses.
I have one of those, and simply added a wooden sateh stick in the spare hole, fitted perfectly and the clock runs perfect for over 2 years of my Bürk master clock.
The ebay listed clock is suitable as master clock and has a built in low voltage 12 or 24 volts supply and provides alternating pulses to drive the Cifra 12.