Thanks Chris for bringing back some good memories for me. I was fortunate enough to be able to have access to the museum's reserve collection back in 1978 with the help of an American museum curator, who was working there for a year. Just to confirm Chris's guess...there is a very large collection behind the scenes. I was just interested in the WWI period items, of which there were plenty, but there was much, much more.
At the time I was there they were putting together an exhibition relating to WWI. They have many items from other participant countries of WWI, in fact, enough to put together entire mannequins representing Austrian, Russian, French, Italian and other armies. I wish I had taken a lot more photos than I did. I spent the better part of a week there and really had to rush through to see what I wanted.
Chip