Have just acquired a LC Smith /Baker 3-barrel 10ga. SN: 548. Trying to determine what the finish should look like if original. Would it be the brown or bare metal look depending on how much was left. The question I quess what should they look like. I am seeing some with a blue finish on the barrels and I am assuming these have been done over sometine during their like. I have never seen a brown finish turn to a blue color. Any help in this area would be great. Thanks Bill