Didn't expect to see this on morph market...

[asplundii]

I think the het is missing some head scales but ir otherwise normal?

Yes, Scaleless-head is the het form and is characterized by missing head scales and also a general difference in the appearance of the scalation on the body. They also have reduced labial heat-pits.

There are a few similar ( though not identical) morphs including the true scaleless and the microscale? Some body please correct me if I'm way off base here?

There is no one "true Scaleless". Both the superform of Scaleless-head and the superform of Microscale are scaleless-type animals. So far, all of the Scaleless animals on MorphMarket have been SuperScaleless-head