Eric,
I owned the rifle in Georges article, it is in Volume I of the compilation of Muzzle Blast's "Longrifles of Note" series pp 46-47.
Mine was indeed a big robust rifle, the trigger-guard is as you describe, actually, Jon Laubach borrowed it and made several casings (I still have the first one out of the mold that Jon gave me as thanks for the loan), which by the way seem to have multiplied over the years!
My rifle fits the scenario you described for stock refinishing (skinned), likely done in the 40's-50's based on ownership; in fact I worked up a mild stain (i think using alcohol as a carrier) with Wallace Gusler's help to tone it down. Further, in an attempt to not exacerbate the damage already done by a previous owner (chop sawed the fore stock), i carefully spliced in a 14-16" piece to the stock from the second ramrod pipe to the muzzle. I think Carl Pippert did the flint conversion, looked like his early work, nicely done.
So Eric, if any of this sounds familiar, you indeed were looking at my old rifle! I passed on my photos of the rifle to the purchaser, even took before/after shots, because i think recording honest restoration or conservation is extremely important to pass on to future collectors, unfortunately i cant find the negatives. Possibly whoever owns the gun currently still has them...but I do have the TG!
Bruce