you and I both have the platinum silver/grey dial which is made of solid platinum.
Nico, Thomas, and I also have the WG black dial. Nico also had the PT white dial, Paris boutique edition, which was stolen years ago.
So essentially we are missing a couple variants.
If we are talking about the Duometre line then there are many more missing from the QL enamel dial, UTT series, etc..