pf777Discover the epitome of precision and elegance with the Parmiani Tonda PF, a timepiece that redefines the boundaries of luxury watchmaking. Crafted from the noble 925 platinum, thisAKTISIL PF 777 is an activated SILLITIN Z 86, produced by modifying the surface with alkyl silane. Used as a functional filler alone by itself, or in combination with rheological additives