In the example attributed to Gino Vistosi, the round glass discs does not look like they are mounted with screws but hanging on some hook/ loop thing at the top of the glass. The glass too seem different, yours are speckled instead of the round milky white centered on clear glass discs. Your glass discs also looked cupped(?) instead of flatter.
Hi Jochen, the glass in your lamp, are they showing slight variations like they were made individually or more uniform like they came out of a mold?
If you need any help, please contact us at – info@designaddict.com