I assume you are in Europe? We didn't seem many Koga-Miyatas in North America, especially as early as this appears to be. I am sure someone who knows more about the brand will chime in sooner or later.
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1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear