You arent getting it, go back and read post #7 . With pics all you can be told is if the rifle has the correct parts, not original parts.
There is a huge difference between "correct" parts/ garand and "original" parts/garand.
I am not saying your"dealer" is trying to cheat you. He may not be a expert on Garands. If he was he wouldnt be telling you the rifle is original without a papertrail.
We could look at the rifle and tell you it "may or could" be orignal but again, without proof, provenace or paper trail its nothing more than a educated guess. IMO $2000 is to much for a educated guess
You seem to have your mind made up already so good luck