Of Interlockings And Other Machines ...: Molli, 1991

We also visited Bad Doberan in 1991 and took Molli back and forth once or twice. I know that back then you could get on and off the train in Bad Doberan without any problems, and at the walking pace of the train you could also walk ahead of it to take photos—is that still possible today?
Here are some images:

Molli's DR 99 2321, Bad Doberan, August 1991

Molli's DR 99 2322, Bad Doberan, August 1991

Whistle and bell signal on the Molli, Bad Doberan, August 1991

The photo I too of the lever frame at Heiligendamm was taken through a reflecting window, so there are some reflections here. In terms of block instruments, there is just a single block instrument for all routes a¹, a₂, b¹ und b₂—thus, only one route can be set up at any one time. As for the levers, we can see

two route levers—in the picture, one can see that the right one is reversed to the upper position for locking route b¹;
two signal levers for the single-armed semaphores A and B—in the picture, the right one is reversed, so home signal B is cleared;
and two points levers for points 1 and 4—both are in normal position in the picture, as route b¹ leads into the main track.

Lever frame, Heiligendamm, August 1991

Here you can see the train that has arrived on this track:

Molli's DR 99 2321, Heiligendamm, August 1991

Until a few years ago, this home signal stood at the entry to the terminus station Kühlungsborn West, but it had been equipped with a white cross showing that it was no longer in use. In 1991 it was still in operation. You can see here, as in some other pictures in previous postings, that narrow signal masts were erected in many places where they were not actually necessary—obviously the spare parts stock for masts was at some point restricted to narrow masts, which were then (at least partially) used as standard masts:

Home signal A, Kühlungsborn West, August 1991

The signal was controlled by this signal lever:

Signal lever, Kühlungsborn West, August 1991

I would think that the lever was flipped in one direction or the other depending on the entry track (1 or 2)—there are at least markings on both drop-in weights. However, there is only one lock below the release slider, which means that a release dependent on the point switch position could probably not have taken place. But maybe there is another lock on the back of the trestle. Maybe someone has a signalling plan that explains how this worked?