aaronm
2923
Solid
If you look at the back-side of the rotor in this 5180, with a skeletonized 240, you can see that the rotor is solid, though engraved to match the watch here
A
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Patek says so
By: watch-er : August 30th, 2011-08:22
You cannot tell if a object is solid by looking at it. However, Patek in its literature repeatedly states all of its rotors are solid gold no matter what their shape. The smaller rotor would have to be solid, in any event, to have the necessary weight to ...