Its a GMC water tank truck in 1/35 scale.
A while ago I read a article in a magazine about this one built up a water tanker after the war forgot were I put the magazine, A lot were used by Fire Departments and for Civilian.
I know of one that was used as a Bush Fire Tanker here in the Valley it was slow going to fires and mainly used to top up other trucks tank.
Will use flat colours on it and weather it up.
