There was a recent discussion of the SSP here on the Forum. In my opinion, had Colt produced and marketed (and further developed) the SSP instead of the All American 2000 during the "Wonder 9" era, Colt might be a far bigger and healthier company today.
The author says that an SSP shows up occasionally on the online auction sites. I have never seen one show up there, but the high-end auction houses have offered one now and then. (Maybe it is the same one being resold over and over?) The last one was just sold recently, but I do not recall the house or the selling price.
The SSP might have been Colt's savior, but we will never know.