The stainless steel case is preserved in outstanding condition, retaining sharp, well-defined edges and proportions consistent with factory specifications. The original satin finishing remains clearly visible, showing no evidence of excessive polishing — a notably rare characteristic for Milgauss examples dating from the 1970s.
The smooth steel bezel remains crisp, with surfaces and geometry fully coherent with the case architecture. The watch is fitted with its original Rolex Twinlock crown, operating precisely and correctly.
Overall, the case presents exceptional homogeneity, reflecting exemplary long-term preservation for a professional scientific instrument of this period.