Richard : What you are saying makes sense. However, yes I had checked the legends on the 1967 Radio Installation in the Assembly Manual, and saw nothing about "with A/C. I went back and checked the Select-Aire Installation, and again saw nothing. I also checked the 1960-68 MPC, the 1965-72 MPC, and the OSI books from 1967-1969 ; again nothing. Even the AM Radio Kits are shown with no referencve to A/C or non- A/C. Is it possible that the speaker I pictured could have worked on an A/C car ? I know that a similar type speaker to the one you pictured (with the larger, low profile magnet), when supplied with the Rear Speaker Kits, was noted as "Deluxe Speaker".
I haven't checked my TSB's yet, or all of my 67 a/C info yet, but I guess that's my "next stop".
Bob