Early Quarter-light: Having a bracket on the side (circled) through which two screws go into the inner door skin, instead of the short front leg for the two studs.
Remove/refit by John Maguire in Australia:
Both the vent and the drop-glass can be removed and refitted with the other still in place. To remove or refit the vent by itself remove the drop-glass rear channel and slide the glass back towards the lock, then undo the vent bolts and nuts. As you raise the vent twist it through 90 degrees so the bottom bracket clears the top of the door opening.
Sheared front top stud
Bottom stud plate corroded away on one of them
As a result of a question by C Cummins on the MGOC forum, note that unlike the chrome frames above, stainless frames have the bottom stud plate pop-riveted to the side of the leg and wrapping round to the front, on both roadster and GT, instead of being riveted to the front. Also the front face of the channel is flat, and not recessed as on the chrome, so this stud plate has a double-bend to position the stud in the same place as before. Although shown detached I'm not aware they are available separately, this picture is from an eBay ad for remanufactured units. Maybe they make them, and would supply them ...
Some pitting on the handle brackets ...
... only light pitting elsewhere
Countersunk slotted screws on the opening vents, rivets to the frames on chromed units ...
... both riveted on the later stainless units. Replacement hinge pop-riveted on Vee rather than have the job of removing and replacing the glass from the vent frame.
Replacement stud plates with 2BA threaded holes
Reinforcement plates for the above stud plates. These go inside the door, short one to the front, with the hole nearest the front. Images from Leacy Classics
Plenty of clearance for nuts on top of the latch plate
Fully dismantled and ready for the rechromer
Bottom stud repair on the right. The light rusting is on one side only, to be treated along with the other one before return to Terry.
Parts as returned, the other one is just the same
Final assembly, again the other one is just the same
What an innocent little thing that pesky hinge is
Pop-riveted repair to an opening vent