Anyone else putting together a set of staggered Cookie Cutters?

I have a set of four 944 7x15 Cookie Cutters. I'd like to have some original 6x15's for the front. My wheels are currently standard black centers with polished rims, clear coated. I plan to have them refinished.

I'm curious to know what the original silver finish was on the early 6x15 Cookie Cutters. Were they raw aluminum, polished, clear coated, or silver painted?