You can look at the paint chips in this library
https://www.packardinfo.com/xoops/html/downloads/1949-1951_Ditzler.pdf Ditzier became a division to PPG. PPG has all the formulas to convert the original Ditzier to modern coatings. I chose their EnviroBase for the color layer because it is water soluble, because it doesn't put a dent in the ozone layer and because I'm from Oregon. We don't shoot lacquer here. Lacquer is mostly carrier and not color. That's why you have to paint layer on layer on layer of it.
At the bottom of the Auto refinishing area of the PPG website there is a contact link so you can send the color lab an email. They are really great. You give them the Ditzier info for the color you want and tell them the place where you're having the car painted. They communicate with the person buying the paint.
It is as sure a way as possible to get the color right using a modern "paint," automotive finish.
I have 1940 Dupont colors and will scan and send to Big Kev to add to the paint chip library.
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