As far as breeding is concerned and your animal... you want to know if it's "pure" or not.
Since, you've referenced to it a few times in your questions. I've gotta tell you...
You
can not refer to your animals as being
"pure" when discussing it or selling any future offspring.
There is no such thing as "PURE" when dealing with these animals (as of yet).
Domestically the lines haven't been through enough generations to qualify for such a title.
Basically your questioning of the breeders reliability from whom you sourced your animal is ...
well quite frankly, proof enough that you don't have a documented animal.
http://en.wikipedia.org/wiki/Purebred
The most you can get at this point is if you are able to establish a line that "breeds true type"
-not only to form but also to color and pattern.
and you can't guarantee that, until you have raised a few generations of offspring.
After determining that
all of the clutches have no sign of deviation outside
of what is acceptable for "Sambava" from that same pair of parents and grand parents can you start making that claim.
Naturally, that all has to be recorded and documented for the public to reference.
It's still entirely possible that you have a mixed locality animal who's line hasn't been refined
dating back a generation or two ago who were only bred for the pet trade.
(part of the discussion about mixing locals for fun colors).
The male looks like he's conforming to the accepted type, but may still hold
some deviant genetics that aren't expressed and may show up in his offspring.
and that's only for the male
You have to wonder "what about the female he was mated with?' what's her genetic story?
Best thing to do is to buy your animals from someone you can trust with a good reputation.
and if you want to start breeding them it's going to take years and years to get established.
I know of no breeder that has a consistent line yet established the best that can be managed is type of locality.
We're still all on the (pre)crawling stages of chameleon breeding ya know.