This Supertone Professional was undoubtedly made for Sears in one of William Lange's workshops. The scale length is a whopping 28". The head is 12"D.
The neck is perfectly straight -- no cracks or repairs, likewise the rim.
The action at the 12th fret is currently set at 0.120" under the 4th string and 0.090" under the1st string using a 0.065" thick shim at the heel and a 1/2" bridge (with a raised 5th).
It has a new skin head and all original hooks and shoes. The chrome plating is in excellent condition. There is visible fret wear on the 1st and 2nd but not enough to notice while playing. There is some fretboard wear, as visible in the photos.
The old homemade, all solid wood case (included) has been made totally serviceable with new latches and handle.