Josef Riedel scenic cameo lamps

I have these 3 lamps and recently I found out they were made by Josef Riedel,circa 1900, i was many years without knowing who had made them,?? because the company did not mark this kind of Riedel cameo lamps in those years, but fortunately I saw a vase on Collectors Weekly with the same cameo. I leave these pictures, hope you like them.