By all means, collect what you will. I already noted that people collect all sorts of strange things. I know where there is a 120 year collection of medical volumes on the single subject of bullet wound pathology.
It isnt at my house.
I probably should mention that I don't consider original Parker shotguns to be anything special, not since a European gunsmith had one apart on his bench and wondered aloud about what is all this stuff that is in here for? I couldnt honestly disagree with his assessment.

I think Mr. Roberts came down solidly in the reality of the whole picture.

Reality is a good place to be when making purchasing decisions.

Best,
Ted