To echo Gaylord, thank you for showing us a superb Hudson Valley Fowler. This kind of defies ones expectations for a good gun. It is monumental!
The fact that it has an unshortened barrel is phenomenal, as most were cut back. Your restorations were completely in order, to the good of the gun and certainly not overdone. From the photos, I would have taken it for a 100% gun.
As you as commented earlier, the sideplate motif does have a demonic aspect to it, although I see it more as a modified dragon plate.
Well, what else is there to say about a wonderful gun? Thanks agin for letting us look at it and good on you for finding it!
Dick