The orange and white colour scheme is really a nice one, and stands out nicely among the black tank cars and grey covered hoppers that always fill the freight yard here.
I was told a while ago by a friend that there are only 3 of the orange and white SCLAIR three-bay covered hoppers remaining. They have all had their reporting marks changed to NCLX, and the numbers are 46044, 46048, and 46051.
Actually the Intermountain models aren't really exactly correct (it figures), but they're close enough for me. The main difference that I can see is the 3 horizontal stiffeners that run along the top of the sides on the prototype, whereas the Intermountain model has only one, which is located a bit lower down on the side panels. Oh well, I don't really think I could properly correct such details, and I'm content to live with such a compromise anyway.
Note that this one (46548) has the word "Polyethylene" painted out in both locations.
Here's a photo that I took a couple of years ago of the 3rd one of the remaining prototype cars, NCLX 46551. This one was taken as the freight car was sitting in the yard at Sarnia.
So, I'll be trying to patch and re-number my 3 models to at least resemble the last 3 of the remaining prototype covered hopper cars in this distinctive paint scheme. Wish me luck, especially with the undecorated kit version of the model.