A US based sales thread won't see many entries but this one's worth a look out of curiosity. Loads of photos. It has been seen elsewhere before with fantasy prices on the part of the owner but now trying its luck on U.S. eBay
It's worth what it's worth I suppose and an auction will be the best way for any vendor to find out.
I find the limo versions of a lot of cars oddly proportioned. For me it's something to do with the raised roofline and lengthened wheelbase. Ford Granada stretch jobs look the same. When I was involved in new car product for a while I found myself at the launch of the Hearse and Limousine versions of the latest Jaguar XJ as developed by Wilcox and one of the Wilcox family walked me round the Hearse version and explained why it was the way it was. When I questioned the roof height he said it was so that the undertakers could get in and out of the car without removing their tall hats. There's also a space under the coffin deck in some hearses for, well, another coffin - useful on those more rural assignments when you're some distance from base.
It's one of those unfortunate things, really. If it had been restored back to what it started as, ie, a smart silver and black limousine with a typically understated British interior, it might have been worth something - maybe not as much as a smart 'Crab perhaps, but it would have value to somebody. The only way that this will have real worth is if it appeals to someone's eccentric nature, because it's now very far from where it started. The original restorer was Tuscon Wolseley (On the Wolseley Forum) and he did a huge amount of reconstruction to get the car solid and running. Then it got "rodded" a bit. Then it all got a bit confusing... Somebody died, somebody took over, somebody's wife took over and the whole thing turned into a mess. Personally, I don't really like what it is now and I doubt it will ever find a proper home. It'll finish up as one of those cars that hangs around forever and never quite gets a home. Shame.
The factory ran some development cars with the 1800D engine in Leyland Princess wedges. I think there was no more than 50BHP available which would have made for some slow acceleration times. I also remember reading a description of the Austin Cambridge Farina diesel that had the 1600 version. A rare car described as "highly undesirable, then, as now"