Above, X-ray view of the left side of Cernan’s Apollo
CCEM (headset). Similar to the right side, the earphone module is undisturbed, while the microphone module has been removed and re-inserted. Wires leading to it have been soldered. Compared
with the reference CCEM, and even compared with the right side, the microphone module here appears somewhat different. For example, note the different arrangement of the two large cylindrical
components, and no visible row of small square features. It is not known if the original microphone module had been modified before re-encapsulation, or if possibly a different module has
been inserted, perhaps to test a Skylab modification.