Hi Fabrizio,
I'm actually looking for one. heuer 510.500/501. if you habe one for sale or anyone, do let me know. thanks a lot :)
: It looks very cool indeed, but I can tell you L5100 models have
: always been the centre of my small collection (Carrera 510.523
: now on the wrist!) but this one is a real mystery.
: Chuck himself doubted it's ever been produced, we just have that
: drawing in a catalogue but not one single picture from an actual
: watch.
: We don't even know if it was in PVD, as the 510.501 (in the drawing
: they look the same) or in polished steel.
: Cheers.
: Fabrizio