Hello, I recently bought a chopped Brooks Professional on craigslist and was wondering if anyone could help me identify it. Underneath is "063" or "0G3". This professional has the medium copper rivets. The nose of the tensioner is also copper. The back nameplate says "BROOKS" with "England" below it and the nameplate itself, is copper color. Also I believe the rails are chrome. Other than that I don't know much about it. I'm wondering why the rivets are the medium size and why the nameplate is copper. Is anyone out there familiar with this distinct professional model.