[Uent]

I don't have much information. This is in Australia, but I would have to guess it was brought here because of the age.

 

[sharps4590]

A) Flip it over and take a picture, along with any and all marks and stamps that are visible.
B) From what I can see, it isn't a flintlock
C) Other than the above, I don't have a clue though I have seen very similar pistols.

 

[Grizzley1]

Looks like a French model 1766 cavalry pistol that has been converted to percussion.