As best as I know from being the anal platinum guy that i am, they are crafted in White gold, just like most other brands....
Not many out there matches the crown to be in the same Platinum as the case... Sad to say, but so true to say....
Cheers
Stephen
One interesting point to note is that the crowns on the platinum cased watches are also made of platinum. This is somewhat uncommon in the industry, with most manufacturers using white gold because it is easier to work with. These little details are testament to François-Paul’s commitment to quality. 
it's not only the Upside Down, of which i also was meaning to refer to when i say not many others, but even VC nowadays for their Collection Excellence Platine executes the crown in Platinum. Not only the crown, but the hands as well, and even some bridges!
One day in the future i have confidence that they will work on creating a piece that is 100% Platinum!
Cheers
Stephen
Because here on the Japanese market it has been said as such, starting from last year's pocket watch from the collection Platine!
But it is really difficult to tell whether the crown is really made out of Pt or not because there isnt enough space to put a hallmark on it, unlike say the buckle which usually have a space behind the brand name.
cheers
Stephen
As confirmed by boutique here in Tokyo
Stephen
When I asked David Zanetta if the crowns were platinum as well he looked almost insulted. Crown is platinum and made by De Bethune.



- SJX
