Suspect that these cars were the prototypes / catalog art because I have never seen the cars for sale anywhere afterwards. Since the Eastern Depot was a large K-Line dealer - they may have gotten these cars from K-Line, when K-Line was starting to implode. The car also came with a box.
NOTE - The car is NOT for Sale !!
The K-Line "Girl on the Moon" reefer was definitely produced. I bought mine (also not for sale) at a hobby shop shortly after they were released, and have seen them once or twice at York.