Just picked this 20 gauge up!

[GH-16]

Bryan,

From what I see in your pictures I don't think your gun has been plated. I think the action has just been polished to a high sheen and with some use it should dull out some.

The bigger concern if I'm seeing things correctly is the barrels look like they may have been hot salt blued rather than rust blued. The danger with hot blueing Parker barrels is the top & bottom rib's are soft soldered to the barrels. The blueing salts used with this type of process are corrossive and may eat the solder away and the rib's may come loose over time.

If I were you I would have a competent double gunsmith look the gun over for safety and shootability. If he gives it his blessing just shoot it the way it is and have a bunch of fun with it while doing so.