Ok here is a photo of were the pin is. If you follow the photo addy you can find a few more photos of this and many other trek and stuff photos.
https://farm4.staticflickr.com/3871/15121375411_7cf5ccd88c.jpgP8100032 by propologist, on Flickr
Wow. This is absolutely perfect! Thanks again, Mike! Never before seen materials (to my knowledge, anyway) here, folks.
Your Flickr has a great view of the notched holes in the door. Looks like the door was held in place using a ball latch?
![ball-latch.PNG ball-latch.PNG](https://therpf-f28a.kxcdn.com/forums/data/attachments/137/137268-9e6314a09ef002ee07643b9ffbd52950.jpg)
And the rest of your Flickr is a treasure trove. So much stuff here that I would love to build for myself, especially the Vulcan prop from "Gambit." I have never seen such excellent and detailed photos of that item.