Hetairoi Cataphractoi

Hello. I'm in love with Bactria and it's history. Seriously. I'm always searching for threads, articles, books etc. for this Hellenistic kingdom in the east.
Anyways, when i was playing EB i saw this unit named "Hetairoi Cataphractoi" and i lost my mind! But i saw that thread the other day in TW Center, pretty much saying that there is no picture of the wall carving depicting 3 cataphracts with face masks, a wall carving that pretty much inspired this unit. I searched everywhere just to found anything that can lead me to this picture. But to no avail.
If anyone knows something, i will not have a problem if he shares his thoughts with us. Merry Christmas to all!