Goodyear Covered Hoppers

Has anybody seen thease covered hoppers before?

http://gelwood.railfan.net/acfx/acfx54588ajk.jpg

What is the number series of thease and are there any more like this with different reporting marks?

Do thease hoppers carry polyester pellets or resin?

They carried pellets.

I’m using past tense, because I haven’t seen any of these for years–but I have documented at least one car that has had these markings painted out and is now leased to somebody else.

I had not seen any cars painted this way with reporting marks other than ACFX. Cars I saw suggested that the numbers were pretty much at random.

Here’s a list of cars I’ve documented (not counting this one, which I hadn’t seen before):
ACFX 52339, 52872, 52901, 52911, 52918, 53007, 54246, 55217, 56380, 56774, 56775, 56778, 56782, 56786, 56794, 58193.