Stock is normal for a refurb Romy. Here's a shot of the wrist of one of my Romys. The wrist isn't just worn from use, it has a ridiculous amount of extra finish that is dark and smooth to the touch in the affected areas. It's a very interesting feature:
As for the bolt, everyone else's guess is as good as mine. I have not seen a Romy with a bead blasted bolt carrier like that.
Closest thing I've seen is this matte finish example (also an EF prefix):
These run the gambit from shiny to dull though, perhaps even chrome plated like this FE example:
$375 is quite a reasonable price face to face.