Here are the Calrad drivers I stumbled across from the classifieds page at Audio Asylum. Condition is wonderful, almost like new. The cast baskets are a thing of beauty, and the Alnico magnets should be a treat too. Even the wire terminals are nicely made, the fit and finish of this speaker is far beyond what the typical modern full range driver has.
However I cannot find Theil Small specs or recommended cabinet info for them. Seems that the current generation of Coral/Calrad owners use these in an open baffle arrangement. I have experienced how cabinet loading and internal dampening can dramatically affect the sound of a full range driver. It would be nice to find some factory specs and cabinet recommendations.