Brand new Dave Clark's going for $25 on ebay?? I guess I'll hang on to them.
As for the PRU 57 headset, pretty sure it is for aviation...
A “variable family” nomenclature for the ANR
system has been established and designated as
“headset electrical,” active noise reduction,
PRU-57(V)/P. The...
The DC headset is a h10-76 and I would sell it for 200 plus shipping.I don't know how to post pictures on here, but I can email them if you are interested.
I have a brand new Bose PRU 57 headset for sale. Feel free to email me at pittles@gmail.com if you are interested. I also have a set of new dave clarks for sale too. Can send pictures of both.