Gino Sarfatti, could anyone please help me identify these lamps?  

For the past weeks I have been helping my parents out with getting rid of their old stuff at our local marketplace in the Netherlands called marktplaats. Among the things I tried to sell were a couple of 30cm diameter ball-shaped milky glass lamps bought around the eighties in Amsterdam at a store called Indoor with I identified as being Gino Sarfatti (by googling for two days...). After receiving many reactions on the add several people expressed their doubt of the origin and because I'm no specialist on the matter I hope for a objective opinion.
I hope somebody here is able to help me out identifying these lamps. Many thanks in advance!
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