
If you know anything about this synth, please post in the comments. Title link takes you to the post on Moogulator.
Update via ndkent in the comments:
"I'm pretty sure it's called the SY-1010 (not sx1010). Single VCO and envelope synth from 1978. In direct competition with the Roland SH-09 (same Japanese release date and price). Given that an espablished brand like Yamaha came out with the cheaper CS-5 within about 2 months I'm not sure it had much ground to compete on.
I wonder if those paper labels stuck on it are someone's attempt in translating the control names into Japanese?"