1960's 5W Tube Guitar Amp Handmade Enclosure Roberts 770X

Originally from a 1960's Roberts 770X reel to reel.. The mono block amplifier has been housed in a custom handmade enclosure?

The circuit has undergone complete servicing? Tubes are EF86, 12AD7 (12AX7), EL84, 6X4 rectifier? 8 ohm speaker out, preamp out.