BUying a shotgun.

[Mr. 16 gauge]

Anything in particular that I should look for when buying a used muzzleloading shotgun?
Went to pick up my shotgun that I had in for repair at the gunsmiths the other day, and noticed a 10 gauge double in the rack. It's a caplock, and it looks original....price is marked down to $225 from $450! Ramrod looks knew, but I was thinking about buying it and using it as a fowler. Some of the parts appear new/newer than the rest of the gun (caps, ramrod). No name or make on the gun.
Any thoughts/comments?