Interestinger and interestinger !
The loose diamond the above pics make you think about this. As you do, note:
+ The loose pin looks like the real ones and has an aged look
+ The rivets don't look like an amateur installation
Also
- An aged look means nothing. There are not only old fakes, but I can duplicate that look by sticking a new pin in a flower pot on my back deck for a month or two.
- People putting together bad daggers are getting better at it. Some of them a lot better.
