That car will never sell for £46k. I can't even see them appreciating that much in the future either especially considering their high price tag to begin with.
Look at R26Rs, they cost around £24k brand new to begin with and they are nowin the bracket of £22k without showing any "going up" signs, people simply refuse to pay crazy money for a special Renault model, no demand and hence no appreciation.
I'm afraid they can't compare to the blue oval special models of the past.