This is a Kraft Series 77 5 channel AM transmitter on 72.400 Mhz. It has the removeable RF module inside that permits changing frequencies very accuratly. It does not have a buddy circuit installed, hence the chrome hole plug.

 It uses two packs of 4 cell, 1/2 Sub-C cells. 

 the back screws are taped to the inside, and the battery pack needs to be removed. it uses two packs of 1/2 sub-c 4.8v. (In my Tx I actually use a 3 cell LiPro), so LiOn cells will be useful. Schematics and manuals are possibly available from on line at "vintagercfiles,com".

I can combine items and I also ship to Canada