Thanks John!! That is pretty much as I see it.
Also, another reason to go for a more "upper-class" or at least a well-known-person persona is that more documentation, more specific documentation is likely/certain to be available.
And, to maybe nudge this thread back to its original topic, NONE of the old doubles I use or know about had single triggers untill well into the 1900s. That is not to say that single trigger guns did not exist. However, I would expect them to be the upgrades purchased by the gadget-minded and well monied folks. Double triggers were and remain the preference of nearly all the doubles shooters I know. Double triggers are simply faster and more reliable, although some of the high quality single trigger designs (on Brownings, etc.) are quite reliable. On cheap doubles, like those Stoeger imports, I would avoid them.
Lars