That's very interesting John , while 1145 & 1146 were perhaps not the first to have Air conditioning even in a basic form as josefstadt and jhb171achill have pointed out , as compaired to the 'fully air conditioned mk2d's, the were certainly ahead of there time and represented the end of coach building at Inchicore , they also must have some form of steam heat too , perhaps even thermostatically controlled , as the would have to work in sets with existing stock.
With regard to the Craven 1st's I seem to rembember they had pine or oak coloured veneer paneling throughout as compared to the grey chequred plastic and the later dark beauty board in the standards even in the 1980's when they had been declassfied , one could always tell the ex 1st's by this feature , while the Murphy models craven is suberb ( I bought them all ) one niggle the non TL one's like 1149 have no battery boxes or dynamo's on the underframe which they would have carried prior to being converted to TL (Train Line) in the early 1970's with the arrival of the Dutch Vans and the BR vans