for illustration: a DSK A50 500 cm3, a copy of the BMW R 51.
Photo credits: D.R.
The DSK - Daiki Seiki Company brand

In short
Years of production
We do not yet have a motorcycle specifications for this brand. But the site
moto -collection
will probably have information that fits your needs.
Location
The history of the brand
Other brands
Here are other brands from
Japan, and having made motorcycles during the same period as DSK - Daiki Seiki Company