A large 19th century flintlock pistol

[rickystl]

And now the barrel:

On the bottom of the breech plug tang is the number 42.
On the left, rear side of the barrel, at the breech are two stamped letters I can't make out. But the ELC over the star inside the oval is there.
On the bottom of the barrel, about 2 inches from the breech is a similar mark posted by Corado above. Below that mark it looks like there are two stamped, separated letters I can't make out.

Rick