The A pillars have had at least two grey finishes. My Roadster has a mottled dark grey, which resembles Hammerite, but is more like enamel. It was like that in 2008, so although it may have been refinished, I suspect this was standard in 2005. This finish has not deteriorated at all.
My other two Morgan's have had the current pale grey finish, and neither have shown any sign of oxidation. I have taken the screws out and applied a smear of Coppaslip, and I keep them polished, but that's it. Over enthusiastic polishing can gloss the finish, so take care when doing it.
