I don't think it's galvo, definitely a paint or powder coat of some sort. Must be really hi-temp! I just put on a set and I like them so far. They are more precisely machined than just about any rotor I've seen.

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-tp


1990 300SE "Corinne"- 145k daily driver - street modified differential - PARTING OUT OR SELLING SOON - PORTLAND OR. AREA - PM ME FOR DETAILS
1988 560SEL "Gunther"- 190K passes anything except a gas station
1997 S420 - 265k just bought it with a rebuilt trans. Lovely condition