It would be more exclusive for sure. I know there are only a handful of 1942 -6719,s and I have 2 of them and I will scrap one when the parts are salvaged but only because there arent any parts available to restore it. Not as rare as yours though. Really nifty wagons, too bad they arent restored yet. I would be willing to do one but 3 are too big of a bite for me.
Good luck on your auction