I have a set of NIB MTH Rail King Blue Comet cars that have never been on a track. These were the first cars I bought, about 10 years ago and I never came across an imperial Blue Comet engine to run with them. If anyone is interested in a 7 car set, please reach out to me. Or on the converse, if you have an Imperial Blue Comet engine you would like to sell, I would also be interested.

30-69164 (4 car set)
30-69165 (2 car set)
30-69166 (single car)

Box of the 2 car set was slightly damaged when I originally bought it, but the cars are undamaged.

Intending to sell them for what I bought them for, shipping is not included in the price.