An Unexpected Find: Two Matching C.G. Brooks Rifles

[BigSkyRambler]

I purchased these two rifles at auction thinking they were something else altogether.  I missed a lot I had watched and then these two came up. Thinking they were those Plainsman rifles from the 70s, I bid figuring on a consolation prize. Not until auction was over did I discover what I bought. I guess these are Vincent or Ohio style rifles? They are both .36, stocked in Cherry and stamped C.G. BROOKS on the barrels. One stock has an old crack on underside of forestock. Initially, I only had a vague idea who Brooks was. I am assuming this is Cecil Brooks? I'm here seeking counsel and authentication. Any help or guidance greatly appreciated.

[DGB]

Not Vincent related at all.
DGB

[BigSkyRambler]

Not Vincent related at all.
DGB

Doesn't really fit. Looks like those Plainsman rifles,  but much more finely cafted. Inletting is about as tight as you can get. Seems Brooks may have made similar rifles for two shooters, maybe husband and wife? Target or hunting sights instead of traditional. Looking for input to nail these down.

[Longknife]

A pic of the lock inlet will tell if the locks were inletted by hand or by machine....LK

[Top Jaw]

The cartouche around the name stamp does not look like the type of work that would be up to Cecil Brooks standards.  Unless perhaps it was at the extreme end of his career.

[BigSkyRambler]

The cartouche around the name stamp does not look like the type of work that would be up to Cecil Brooks standards.  Unless perhaps it was at the extreme end of his career.

Having never seen a Brooks rifle up close, I have no idea.  Hoping someone here could direct me to someone who collects his rifles.  Counterfeits are always a possibility with anything collectable.

[BigSkyRambler]

This is interesting.
https://americanlongrifles.org/forum/index.php?topic=32195.0