1972 Canadian H-Code 340 Dart Swinger Special Resto - Finally started!

Curious if anyone has seen this blue paint mark on their right lower control arm, wondering if this might be an assembly line mark put on to identify Right or Left or some other reason. I never used any blue paint in the years that I've owned the car. Only on the right side.

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Got some confirmation on the show GraveYard Carz that these blue paint marks were a factory assembly line mark, the only difference was they were discussing them on a AAR Cuda. Not a lot of original marks still visible but these marks and the coloured marks on the torsion bars were so I'll reproduce them.

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