I've just finished it on the 12k, with only general cleanup. Kept the etch (which, as Dylan noted, is really more a frost than an etch) and cleaned it up pretty well. However, the scales can't really do much... They look like horn, but they're actually Bakelite. The back scale is black, the front one is brown-ish (isn't that what happens when Bakelite gets heated? Turns brown? Can't recall)
I'll buff them, but that's about it.