Highest Valued Bank Note

In currently circulation highest valued bank note is 500 Euro note. But in earlier days there are 500$, 1000$, 10000$ available. But those were taken out of circulation a no of years ago, but some collectors have some. 

Source: German Central Bank records

Current least valued currency unit is Somalia “shilling” in 2009; there are 43 currencies which 1 USD worth over 100 units.

28,205 Shiling = 1USD

38510 Shiling = 1Euro

Current highest valued currency unit is Kuwait Dinar,

1 Dinar = 3.5 USD

Do you Know any History About bank notes??