A separate erase head has been fitted to this machine instead of the usual combined erase/record head. Perhaps it was a prototype?
This example has recently undergone a very smart re-covering carried out by Ian.
Rear panel/Inside of Cable Storage.
....and with the combined erase/record head fitted.
Mains lead/footswitch storage box is at the rear of the unit.
NOTE: The tape is not fitted correctly in the above photo. It should come to the front of the capstan guide, not the rear.