Nice looking English 'trade pistol'. Ketland made a lot of these and they were sent all over the place. Many have brass barrels, and have 'London' stamped on the barrel. Most do not have a bridled frizzen and it has been suggested that this was a cost saving measure, or some prefer to think that this indicates an early gun, (Colonial period). I would think that this one dates pretty close to 1800 with a few years on either side of that point.
Finding one with an iron barrel is very good and the condition is quite acceptable for a hand gun of this age. Thanks for showing it around.
Dick