Amazing how you wish you had kept things after they had gone and the prices went through the roof.
I owned one the first Brens "skeletonised" for the 1938 Crystal Palace Exhibition which Peter L and I have spoken about in the dim distant past, where only 3 were ever done, and one of the three is at Warminster on display. I also had at the same time a "Skeletonised" L1A1. Both were fully open to view and really good jobs on both, done by whoever, probably apprentices at their respective times.
I sold them together with a load of other De-Ac kit for silly money just to get rid of them at the time..........................how sometimes you wish you had kept stuff. Where is that Crystal ball when you want one??