It's an...

... ambulance! Just as Xaltotun of Python correctly identified the bones yesterday. Well done, that man! And he provided a very nice link to a large scale version - here. My PSC conversion is now more ambulance-like:

Still some bits and pieces to do,

including some stretchers for the  body of the vehicle.

And, perhaps, some unit markings.

The inspiration for this wargame conversion came in this marvellous old copy of Airfix Magazine from February 1970. It is absolutely packed with a feast of articles - including, a scratch built Deacon SP (I will, without doubt, have to have a crack at that), a late production Sherman with HVSS, railway modelling, aircraft modelling - all in the smallest type face, matched by often indistinct black and white photos. But one of the clearer ones is:

'A carrier ambulance of a New Zealand armoured regiment in Italy', from Peter Chamberlain's series, 'The Carrier Story'. This series was later turned into the Profile hardback book, Making Tracks; the Carrier Story, by Chamberlain and Ellis. I have that book, but the all white NZ carrier ambulance does not feature in it. 

I rather enjoyed bashing that PSC conversion, and the assortment of old 1960s and 1970s Airfix Magazines that I recently e-bayed tempts me to do more.  Perhaps a carrier shower, a ghost carrier, or a tea and buns carrier...