For what it's worth, I' ve got a lock here, without a key. The lock is in postition "0" (cut-out of the centre cilinder opposes cut-out of outer ring at mark "0".
At the soldering side there are 4 pins, numbered 1 4 2 3. In the position my lock is in pins 1 and 4 are closed (connected), 2 and 3 are open (not connected).
I don't know if this makes any sense, or if it is of any help, but this is all I know. And I'll be happy to give you this lock.
johan
