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See: Section 3/3.3 - Paint Colors For Porsche Vehicles
3.3 - Paint Colors For Porsche Vehicles
3.3 Paint Colors For Porsche Vehicles
As of model year 1972, the identification system used for outer body colors on the paint data plate was replaced by a new numerical system (paint code).
This paint code was required in order to prevent complaints relating to the supply of repair paints.
3.3.1 Paint colors for series paint finish on rims
This is a source reference. Confirm exact model applicability in the original material.