I'm pretty sure that the guitar is not a Daion but a Tama that was made to celebrate the US BiCentennial (1976) with the great seal of the US inlaid in the back and tree of life on the fingerboard and headstock. It could be that it is a part of the tree of life on the headstock that is being confused with the Daion logo.

If I remember rightly, Del acquired it in the late 70s and exchanged his Gibson (J50?) for it.

Alan