Posted by Dick Miller on May 17, 2008, 5:36 pm, in reply to "20 gauge 00"
Tough call, as you said, without seeing it. I'll go out on a limb and say yes(?) IF (1) both barrels and forends are numbered to the frame and (2) both barrels are Armor Steel (my personal preference). A two-barrel set on an OO would be unusual.