Well, I've removed the bumper only to find that it is in fact broken into pieces under the impact strip. I'll pick one up from a boneyard in Cochranton on Saturday.

I believe that these are made from polypropolene and this one (a Florida car) is very brittle.

I also found (after removing the impact strip) that they are painted with the Galinet gray, but the plastic nearly matches the paint color. I've tried to wet sand it using 800 grit wet paper and the weathered finish looks better than I expected. I'll go to a 1000 grit and soon post a photo of the before and after sanding.

Thanks again,
The Tenor Man
Butler, PA