[RickB]

You can't "high polish" rust bluing.
The process is to allow the surface to rust, remove the accumulation, rust again, etc., up to ten or fifteen applications, and after the surface has rusted that many times, the polish will have been reduced.
Rust blued guns have a "lustre" rather than a reflective surface.

The finish on early M1911s I've heard described as "glistening oil finish", which was too bright and shiny for a military that had recently stopped wearing blue uniforms, and the finishes became progressively duller over time (not age, but process).

I've handled and shot a 1913 Colt M1911, and it was hard to tell what the finish looked like when new. My 1918 example looks rough, but under the grips the original finish is intact, and it's very heavily grained, and dull, because the amount of polishing was progressively reduced as production rate increased.
In 1918, Colt was making 1000 M1911s a day.