For a minute there I thought you were going to post that you'd parked on a beach and got stranded. At least you still have all the bits made from unobtainium.
The sprung loaded steel parts are definitely NLA. I would take the opportunity to do an overhaul and powder coating paint job. I did this, replacing rivets with s/s nuts and bolts, now good for another 50 years. Tony
Too fast ordering . I have one of those plastic vent covers I am never going to use, as I dont have the metal bits or the surround. I will go and stick it on For Sale.