Except I just remembered that you probably can't access it... I'll see if I can copy some of the pics here.
UPDATE: OK, here are a few of the pics he published. Definitely 19th Century caplock.
|Bird (duck? pheasant?) engraving on trigger guard|
|Hound engraving on right sideplate.|
He says the engraving on the left sideplate is the same.
|Liege proofmark stamped inside the forestock|
|Other markings inside the fore-end|
Obviously, this is only fit to be a wall-hanger, and even for that will need some cleaning up. But even as a wall-hanger, being able to give more info would be cool.
There are more pic at the original link; you'll need to join Shooter's Northwest, and post a few times in the General Discussion area before you gain access to the Technical fora, though.