Looks like pitting at the rear of the cylinder and front of the cutout in the recoil shield to me.
Specially when the gun isn’t hardly broken in with less than a thousand rounds.I've found that most folks selling an ROA seem to believe it was unfired if it isn't all rusty and full of fouling.
That revolver in post #18 looks pretty nice, but has enough wear for me to expect it has been fired a few times at least.
Not that I'd be hung up on that, but for some reason "unfired" tends to add value for some folks.
Good grief the numbers on this thread. Are they really worth that much now? If that is worth 550-600 mine is worth 1000