"Gamma" Branded Tokai Acoustics

[Sigmania]

Gathering examples of these.

1973 ?

G-150 Gibson headstock
F-100 Martin headstock

 

[Sigmania]

Model G-150

SN 30129

Open book headstock.

TOKAI Gamma G-150 Tokai Gamma Acoustic Guitar Stringed Instrument with Soft Case M469O

 

[Sigmania]

 

[Sigmania]

F-100

SN 731009

Tokai GAKKI F-100 Gamma Folk Guitar String Instrument

Brand: Tokai

Model: GAKKI F-100 Gamma Folk Guitar String Instrument

Specifications:

Body Shape: Folk
Top Material: Spruce
Back and Sides Material: Mahogany
Neck Material: Mahogany
Fingerboard Material: Rosewood
Bridge Material: Rosewood
Scale Length: 25.5 inches
Number of Frets: 20
Nut Material: Synthetic Bone
Finish: Gloss