These were dipped at the manufacturer. I believe they were hung by the ball joint hole and dipped to various levels. This is the level Frank probably saw during the research on this car.What's the story on the two tone control arms? Never seen that before. Is that a tapeline or were they dipped?
I have heard of restorers getting several gallons of black enamel and floating it on a tub of water and dipping the parts and drawing them back out. Lots of runs, but that's the way they made them. I think AO Smith did frames this way, but it would take obviously a very large vat and many gallons of paint. Not many want to invest this much to duplicate runs in the paint.