Slate Grey 6601

Slate Grey 6601 is the specific PTS designation that Porsche uses to distinguish the historic 6601-coded version of Slate Grey — the 1966–1967 iteration of the same underlying color (Glasurit 615) that runs through the 6001, 6201, 6401, 6601, and 6801 code sequence across the 356 and early 911/912 years. On modern PTS-ordered cars, the code 6601 in the name serves to identify the historic reference rather than indicating a different formula from the other Slate Grey variants. PTSRS documentation confirms modern PTS 911s ordered in this color carry the Schiefergrau 6601 designation, and Elferspot listings confirm at least one 991 R was offered in PTS 6601 Slate Gray. The specific 6601 designation carries its own PTS cachet — it is the code associated with the color's first appearance on the 911, in 1966, the model's third production year — and PTS buyers who specify it often do so precisely for that historical connection. The film connection adds further resonance: the 911 S 2.2 that opens Le Mans, Porsche confirms, wore a 6601-era iteration of this shade.