When I went to the museum of the Smålands kavalleriregemente/Smålands ryttare in Sweden with a few friends and when we couldn't find it we asked at the tourist information in the small town where it was. They explained how to get there, it was very close, and gave us the key. I was quite shocked by this but we went there and unlocked the door. There were battle standards from the late sixteen hundreds and pistols and swords all just to grab and sell on ebay. I do hope they have increased the security around that now.