This Grand Concert guitar was made in 1978 by Yang Ho Shun in Taiwan.
It has the same specification as the Yamaha GC-10 which was made in Japan.
Like its Japanese cousin, this guitar produces deep basses and crystal clear trebles.
I have further enhanced the sound by fine-tuning the braces to make it more resonant with longer sustain.
The guitar has some clouding on the clear coat, which is very common for guitars of this age. Fortunately, this cosmetic feature does not affect Its sound in any way.
Specifications:
Top: High-grade solid spruce
Back & sides: Indian rosewood
Neck: Mahogany
Fretboard: Ebony
Nut width: 52mm
Scale length: 65cm
Action: 3.0mm on the first string and 3.5mm on the 6th string at the 12th fret.