Hello from Finland!
Is there knowledge?. What kind of Yamaha, this could fit?
https://picasaweb.google.com/115682797791092027894/YAMAHAOSAKASA?authkey=Gv1sRgCM_I-qPlxb-w-wE#5659184250720803074
This is a Finnish manufacturer of "aisa" by. And made 70 or 80`s
Thanks in advance, Jarno