Pulfer and Williams were the place for Authentic decals. I have both the useless repro's that look fake from 10 yards and the Bill Williams ones,like original.
Perhaps this helps Bill Williams died last September. Pulfer and Williams was purchased by Eric and Vivian Lavine, in Indiana.
574-773-7561
I've restored my own with a fine cloth wrapped tightly aroumd a small metal rod, wetted this in solvent and kind of rolled the extra paint off.
it will do but has nothing to do with a 100 point.
Good luck Johan