Set is an XL100 so it is solid state. Seems to have a one knob
varactor tuner so that makes it late 70's.
Set is worth $00 or a little more IF you want it.
Up side its from the late delta gun sets. I dont remember the chassis
## but it may be the rare modular one with a normal HOT & SCR
regulator.
73 Zeno
LFOD !