Another Kastner below:
Detail pictures of the cast aluminium valves a feature that German makers of the
time seemed to favour.
Tracking pneumatics and Pitch Transposing control.
The pitch transposer back view, this one is different again.
The old pneumatics are well passed their ‘use by’
I think these pressings were prone to leaking judging by the blobs of solder dotted
around the corners.
The original lead tubing is still in good condition though tricky to take apart without