Welcome to our forum. I don't have a definitive answer for you, but found this on a breeder's website:
Spine:
All Bengals are born with three stripes down the spine. Sometimes, these stripes are so wide that they bleed into one large black patch down the back, known as a "Cape". Over time, the Cape can thin or fade or remain the same. The middle stripe down the spine never really goes away and is considered rare indeed if they ever develop into spots. The 2 stripes down either side, however, may stay stripes or they may eventually develop into individual spots. This usually starts occurring around 4 weeks and if you don't see a development towards this by then, then chances are slim it will ever happen. I would say that only 40% of the time these stripes become spots and more spots means better quality.
Rib Bars:
Right behind the arm where the ribs are located is often times a stripe, known as a "Rib Bar". Sometimes it's a thin line barely noticeable unless the arm is stretched out, sometimes it's a thick line or even two lines, and sometimes they are multiple spots that are connected to form strange looking blobby line. Obviously, no Rib Bars means less lines and better quality. Rib Bars can be found within up to 80% of all Bengals.
We have many potential bengal owners share pictures from their breeders. I just checked my bengal and I don't see any spine stripes except the one down the middle. He has what looks like butterfly markings off of that stripe. My bengal is a cool bengal so there is not a lot of contrast between the pelt and the rosettes and striping. Plus, he is 9 years old.
Here is FoothillFelines website with what they look for in a bengal for showing:
http://www.hdw-inc.com/showingbengals.htmYour breeder should be able to tell you the difference between a pet quality and show quality bengal. Even having a slew of supreme grand champions may not make your cat a show cat. You really need to do a lot of research as showing a cat is time consuming and can be costly with travel. If you have a beautiful cat that is sure to champion, then it can be worth it.