If you have a revolver that is in excellent mechanical condition but is roughly 90% cosmetically, do you think a perfect reblue (no over polish, rounding of edges and dimpling holes etc) will decrease the value of the gun or merely make the gun prettier with no increase in market value? This is pretty general and assumptions include that the revolver is not a rare collectable and so forth. I just happen to like "pretty" guns. A given is that one is unlikely to recoup the cost of bluing.