I've covered the legendary Japanese synth shop Five G in the past, but Steven writes to point out that on this page they're selling an MS20 with the serial number '1' for ¥207,900 ($1,700). They seem to sell a lot of MS20s, usually for a hardly any more reasonable ¥98k ($825). If you're in the area, could you sneak in and get us a picture of the serial number?