skippy 10Z,
First, let me say welcome to Greybeard. There are some very knowledgeable people on this site. One of them might post an answer after this one.
I would believe that each company had it's own specifications on the rifles it received from Investarms. One might prefer a hardwood stock, another might want a walnut stock but with less depth and more twist to it's rifling.
I remember seeing the Charles Daly rifles in the black powder section of some old Gun Digest Annual books. I believe that they commanded an above average price.
If it is accurate, and you like it's looks, and it does what you want it to do, it has great value.
C F