Hi. I have found a Koga Miyata Randonneur Extra, with a color scheme of 1990 (as per catalog).
The serial number should match a Miyata or does Koga when importing frames stamped its own?
If I read correctly here on the forum the frame they were using in Netherlands was an '86 Miyata 1000, but SN doesn't match that year, I think.

my sn is RS44043


thanks