Bill, those are CH's guns and he said see what they say about those. The first two are earlier and most certainly charcoal case coloring. The third may be a transition gun, I think I recall that it is, but looks a bit more to me like cyanide than charcoal. All cyanide guns don't have to be garishly tiger striped and I think it is an issue of technique. I've seen some that are at least to me very difficult to tell cyanide from charcoal, particularly after some wear and oxidation.
What do you think?
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