FC7 Plum Crazy Purple paint question

Dartswinger70 said

I took my 70 Swinger C7 car down and I could almost swear it was red primer but it was 18 years ago so...

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I've been taking my FC7 '70 Swinger down to bare metal for 3 months now due to it having multiple paint jobs. As you can see the first layer is definitely red oxide.