Do you fancy a virtual banknote exhibition which is 24-hours opening throughout the year. Admission is free.

http://www.notepassion.com/NP-BN-flashshow.html

Amazing collection!.......errr....I suggest you change your calculator to a more sophisticated one......

Thanks for the suggestion. You mean scientific calculator. There will just too many unused buttons on the calculator. So far, I do not have so many collections for display. Maybe next time when I have a huge collections. Anyway, that's my wife faithful, no error calculator which I bought for her last year.