Great looking rifle. Golden Age rifles are not my thing; I prefer earlier pre-Revolutionary War rifles. As far as unfiired, it certainly has been extensively handled and cleaned and possibly rubbed down with finish. It shows as much wear as my first flintlock I built in 1978.
It might be the most valuable rifle (MVR) on the planet to those who specialize in early Southern Golden Age rifles, but others with a passion for Virginia rifles might favor an early Haymaker Or the Woodsrunner by some simply because of the period. I am not sure that Sheetz rifles are as valued in general as a JP Beck, an Armstrong, a Sell, simply because the work of those makers has been well known and published and sought after for over 70 years. Similarly a rifle like the Griffon Christians Spring rifle has been heralded as the MVR on the planet before and has its adherents, as do the Musicians Rifle (Fessler), RCA #42, favored both by collectors of early Pennsylvania rifles and early Southern rifles, and your top shelf Golden Age Armstrong rifles.
Beauty and collectibility are in the eye of the beholder, and this one sure is pleasing to the eye! I'd love to have that article and some great color photos.