Purchased less than a year ago from Joel Etchen Guns. Description from their site: New Beretta 680 Series TRAP O/U barrels 32" , glossy blue finish, Threaded for Optima chokes (none included) NEW IN BOX Will need fitted - Can be fitted to most 686/687/682 12 gauge receivers. $1250 I will include 2 choke tubes - Full & Imp Mod. Less than 1000 shells through them, mostly doubles. I added these to my S682X Top Single, required very little fitting. I also tried them on my friend's 687 receiver, fit perfectly. I tried to capture a few scratches that appear on both sides (bottom picture). They are only visible when the gun is disassembled. $1000 + shipping. I am in Oregon.
Both barrels are stamped 18.6 and from what I gleam after a little research is that equates to .732 I do not have a bore gauge. The barrels have not been altered.
I will also add that the barrels weight is stamped 1.680 kg. On my shipping scale and, with the choke tubes installed, it reads 3.10lbs