Hammerback,
The tang sight is interesting, appearing similar to but not exactly like the Lyman 103. Without more detail in the pix, it could be a 102(?) or a modified 103. Does it have click adjustable windage or just elevation?
As for the rifle and its Schoyen connection, I don't see old George "building" a sporter rifle with factory stock and standard trigger... IMHO, if he actually did much in the way of modification for target use, it would have had a heavier stock and a set trigger. OTOH, what he would have simply marketed through his shop to the casual shooter could quite well have fit that description. Regardless, it looks like a nice piece.
Regards,
Froggie