Let me get this right. All along, even on the big TOS Enterprise model, there was not just a nipple, but a turret-looking thing?
This is very surprising.
Yeah, so surprising that I don't quite believe it. Could the images Maurice supplied have been an unused or little-used modification? The 11-footer was altered several times: the bridge, the deflector dish, the fore and aft ends of the warp nacelles, the impulse engines... maybe the lower sensor dome had a turret briefly, say in "The Cage" only, and then it was gone. Or on second thought, looking at the "Last Battlefield" shot, maybe it was there all along.