Dude...if that was the case, I would have let you borrow one of my mint Graflex's for $200.00, send it back to me after you made the replicas along with two of your replicas as final payment for using my Graflex and I think you would have still come out ahead.
Seriously....how much more accurate will your replica be with the super mint one you have? It would not be due to measurements. Is it due to the metal finish of the one you purchased? I assume that is the reason? You will be able to offer a "fresh out of the box" look due to having the ability to replicate a mint finish? (The finish is superb, by the way.)
How much are you looking at charging? Don't say 760.00 each. LOL!