Even if it is not worth more, it is more likely to sell sooner and at the top of its band than a comparable "stock" car. The only special edition that seems to attract a premium (at least in the UK) is the Silver Arrow, but (with respect to stats007 who I know is very fond of his SA) that may be because these are among the the last to be produced (and thus are the youngest) and if not, any premium is probably misplaced and won't last forever. Certainly, a Mille Miglia or a Final Edition (same period as the SA) seems to be worth no more than a regular car.

In my view (and that of most sensible buyers), condition is everything with these cars. Nothing will damage your car like not driving it; lack of use is the killer for all vehicles, these ones in particular. I have the brochure for your car and it is an extremely handsome vehicle. I have no doubt that all things being equal it would sell well. If it were mine, though, I'd use it and enjoy it.

__________________
JJ Rodger
2013 G350 Bluetec
1999 SL 500
1993 E300 diesel T
1990 190