I am still sticking with a lower grade enchi... have you contacted the breeder for confirmation, or pics of the parents?
Also I would ask how it was produced....
Super enchi x enchi, normal x enchi, etc... etc...
There is a chance that the breeder got a normal, that looks enchi-ish.
OR if he/she bred a super to something then you are guaranteed you actually do have an enchi.
This same discussion has come up for lower grade Yellowbellies. Unless it came from breeding a super to a normal, then there can always be a bit of doubt.
Bruce