Looks like a "mistake" to me as well, I agree w/ David, probably supposed to be a "naked solid core" (nice "brownish" jelly ribbon thrown into the mix to confuse even further)
Contemporary, "mica" in the transparent green, Lutz is a gold color, nice mib Jeremy
Here's a few pics of an old handmade German handmade w/ Lutz, one shot inside and one outside in natural light (both pics same mib)
The first two are pee-wee, the pontils appear unfinished, I don't see any evidence of grinding ?? Agree, they all three look like Later Victorian era production Germans to me also.
Man, that Lutz is whacked on, it musta been beat, I think there's a thread here somewhere showing Pelts (& a few others) whittled to oblivion then split to see exactly how far the color penetrates the base ?? I'm gonna have to dig a little. Maybe Steph knows exactly where to find it ?? (I hope)