massi.
4536
I prefer to use the Navigator Perpetual during summer
because the 44 mm of diameter doesn't get along with the cuffs of shirts...
During the remaining period of the year the 40 mm diameter of the Senator Calendar Week (which has the same case dimensions of the Senator Perpetual) is an invitation to wear it: great comfort in any situation, at least for my 20 cm. circumference wrist!
About the dial, yes, it is white silver and has the classic baton indexes, as used in the old models.
massi