Yesterday while I was packing up stuff to move, I ended up finding an old Two Dollar Bill I had

This isn't a common bill anymore, it stopped being made, and if you use it, a lot of store clerks think it's fake.
This got me thinking about what currency may be considered rare in other countries.
So what's a rare coin/bill in your country, and do you have any?
This isn't a common bill anymore, it stopped being made, and if you use it, a lot of store clerks think it's fake.
This got me thinking about what currency may be considered rare in other countries.
So what's a rare coin/bill in your country, and do you have any?