I lived in an apartment complex years ago, and a neighbor of mine had his entire knife collection stolen because it was in a display case ready for the taking. So, once you have a collection worth stealing, you may want to consider something like this:
Btw, the BIG safe with the guns is upstairs - this one is just for knives!
I do the same thing. Criminals are going to take what's out in the open and easy to carry. I don't know about most of you, but I worked damn hard to secure the collection I have, and I'm not letting it walk away that easy! !