Super Gun Mod
I guess I could make the argument that any of Gus' or George's cues could be considered historic cues.
Only issue is there are more Gus and George cues out there than they made originally.
Interesting post. I agree that any of Gus' or George's would be historic. Fair minded people agree they made about 1,200 each, though hard to count exactly. No doubt many more fakes exist.
I would also put Frank Paradise cues in this category, about the same number as Gus and George. And I'm not aware of extraordinary efforts to copy a Paradise.
On Southwest, I haven't owned or dealt with them, so I can't claim all knowledge. I do know they tend to look similar. Same joint, collar design, six point, three high, three low, and familiar buttplate with rings, different woods. There are some fancy Southwests though, and they are very nice looking. All of us are aware of the early Franklin cues. But their main production, as far as exhibited examples go, indicate a pretty standard formula.
Overall, I would have to agree with you, though there would be some notable exceptions.
All the best,