I've only seen a couple, and a Belgian Browning, which seemed quite similar. Quality looked above the sort of things you saw with other basic bikes of that era, decent finish. Not heavy, but I would not have classified it as what we would now think of as a lightweight. At about that time, I came into posession of a bike made by Matthias Stollenwerk of Aachen, also very similar. Good European consumer 10 speeds, but I thought they were better than Asian imports of the time. But I also have to say that we did not see many Asian bicycles in the Midwest in the 70's. Schwinn was the common heavyweight consumer bike, as well as Columbias, and Raleigh and French Bicycles were your step up.