Agrr, bondo starts to show up ... covering rusted areas.
Those marks make me believe that the car originally came with a vinyl roof. Rust areas on the roof and on the upper rear fender.
The grand mother of the woman that sold me the car bought the car in 73. Her son was the last to drive it in high school. I bet the car was sitting in a garden, then the son did a Macco repair/paint and is the one that removed the vinyl.
Oh well, rust. Next is to cut those areas, and weld new metal sheets. More work!:D