I was talking to my buddy who purchased his pair from VMS, he told me that there are a couple of distinguishing characteristics that they told him about at the time of purchase.
-"Key-holes" normally present in the 1st 1/3rd of the stripe (starting at the head), he wasn't sure if he was told that they all absolutely have to have them or if it is just common.
-Two black stripes, one on each side, running down the base of the tail and encompassing the tip of the tail. (In the picture, it only shows one side... and my thumb is covering part of it. But there are dark parallel stripes that join at the base of the tail.) Again he wasn't sure if this is a must-have on a wide-stripe or more of a "het-pied marker" kind of deal.
-They often exhibit "floating alien heads" at the bottom 1/3 of the snake.
- A blushed out head... as you can see above.
The snakes that my buddy owns also exhibit these traits and he talked to the people from VMS for quite a while when he bought his pair, which is where he learned about these traits... I would imagine that there are plenty of normals who would show these patterns as well, so who knows if its just a coincidental thing or if these are some of the things to look for? I figured it was worth posting anyways.