Well, Coulter was right on the money. Here is what I received from Steve Phillips, Klipsch Senior Tech:
Those were HI, pro Heresy's from the late 1970's to early 1980's The front had a fascia over the motor board that covered the grill mounting, available for churches and pro sound reinforcement.
As for the grilles, they are available from several sources (Google), but for the logo, it was probably screened on.
In a later email he suggested using a current metal logo found on the KP-110, or the one on the KSM-8.
Kudos to Coulter!