From an Old Harmony add:
"Stratotone "Mars" cutaway model single pickup
Provide outstanding value in its price class. Hollow "tone chamber" construction. Ebonized maple fingerboard. Straight-line hardwood neck with built-in steel reinforcing rod. Finely finish in warm sunburst effect showing the grain of the wood. White celluloid bindings. Adjustable bridge. Hinged tailpiece.
Single pickup built into body, highly responsive. Tone and volume control. Special slide-switch on mounting plate permits quick change from bass emphasis used for rthm to treble emphasis used for take-off or solo playing. $72.00, C45 carrying case, $10.00."
I had one of these in the late 60's!