This decal was available in both red and purple and both decals have the same Ford part number on them with the purple decal being slightly larger with more defined text. This is the purple version.
Ford Dearborn, Mich. Air Conditioner
Maximum Operating Charge
4LBS. 8OZ. of R-12
Complies With SAE-J639
Replaces part # D20E-19A688-AB