Your 39 appears to have the factory blue finish, the steel slide is blued, and as mentioned, has the correct "brushed sides" while the top is bead blasted to reduce glare, this is how they came.....I have seen many variations in the bluing from the factory, from almost black to a deep plum color. The alloy frame is indeed anodized, and they usually look glossy black, I have also seen color variations in the anodizing....I have an early sixties 39 and the frame actually looks purple, and it is the factory original finish.....if you compare ten different model 39s, you are likely to find that no two are exactly the same shade of blue or black.....