Hi and welcome.
As far as I am aware NSR250s were sold only in Japan and definately not anywhere in Europe anyway, '28's are rare over here too, during the grey sportbike explosion in the UK in the early 90's quite a few did come over though most importers would prefer to bring in 400s for obvious reasons. I've only seen about 3 or 4 '28's ever including mine and I believe the "record" for NSR250's in one place in the UK is about 6.
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