GREBE SYNCHROPHASE SEVEN
Using five 201As a 112A as a first audio and a 171 running at 180 volts, this is one of the LOUDEST battery radios that I have restored. It is also one of the least likely to be seen in operation due to the extensive use of pot-metal parts.
Above is a "reject" replacement part made of steel. Since the six linkage parts (5 on the caps and one pivot) must be the same length to have any hope of working, this one failed buy about a 1/16 of an inch. Keep in mind that the fine tuning turns a metal roller against the Bakelite main tuning knob - not much friction - so even more need to be accurate.
It will take a few days to dry enough for reassembly. I'll add a finished picture then.