Originally Posted by
alexnagui
(...) Basically, those Super Sport fietsen were lightweight bikes with upright bars, right?
Yes, and without the chain guards but with drop bars they were usually called "semi-race", I believe. But there were no fixed rules, as "marketing" was already a thing back then.
Here is an article from the "Kampioen", which shows a whole range of models from various companies:
Moet er een nieuwe fiets komen?