Comtek PR-72B wireless headset receiver NOS unused

Comtek PR-72B receiver, part of a library assistive listening system that was never used. Completely clean and unused except to test for function and range with an M72 transmitter, to assure proper operation. Includes choice of crystal - B, H, I, J, or L. Other crystals are available from various audio vendors' used equipment inventory such as for approx. $10.00. Please specify crystal, or if you do not need a crystal, shipping is free.
Thank you for looking, and please see my other auctions.

'A' crystals are now available~