1969 camaro antenna

[PACE&Z2869]

WHO CAN TELL ME HOW MANY DIFFERENT STYLES OF ANTENNAS AND BASES WERE USED FOR THE 69 CAMARO?  OVAL RETRACTABLE VS. ROUND NON RETRACTABLE.  ROUND BASES VS. THE RECTANGLE BASE. FINALLY WHATS CORRECT FOR MY 69 Z28 W/ AM RADIO W/ ONE DASH SPEAKER? (COMMENTS ABOUT THE REAR ANTENNAS ARE WELCOME BUT NOT NEEDED FOR MY APPLICATION.) THANKS.

[Mark]

Oval retractable is the base AM only antenna.  Fixed round antenna is used with the AM/FM radios.  All bases are round.