BC-375 Tuning Units Available some NIB

[K1NR]

ALCON,

   We are helping a ham friend clean out his shack prior to downsizing.   We can across the following tuning units for a BC-375:


TU-6B
TU-7B
TU-8B
TU-9B
TU-26B

They are all in the original boxes; Three (3) of them are still taped shut and have never been opened !
On two (2) of them the tape across the bottom is open but I don't think the contents have ever been removed

We are trying to determine a fair value.  Any help or leads would be appreciated.

73
Gene K1NR