Looking at their web page seems all the moons, except DB16 are Palladium/Steel instead of Platinum/Steel
I am not sure when they changed to Palladium but wondering if its due to the fact that Palladium is much less dense than platinum and so should cause less stress on the mechanism due to the lower relative weight imbalance compared with platinum/ steel
Or is it because Palladium is about half the price of platinum ??