Info on ashton drake heads

just wondered if anyone knows about ashton drake dolls head. i have two of which i have put on soft bodies. head has a hard clay like feel to it inside need to know if this is how it comes or would someone have put it together like this i bought the heads like this attached to the neck piece which i have put into a soft body. but now not sure how to explain on my auction if this is original heads or not. thanks for any help. i have done all the painting and rooting on one and one came with the hand applied hair. the doll is god bless you baby grace. marlene