100 krooni banknote, Estonia, 2007. It belongs to the regular issues of independent Estonia after 1991. The note was issued by Eesti Pank in the early 21st century, before the country adopted the euro.

The obverse features Lydia Koidula, a poet of the national awakening, with a nightingale symbolically associated with her work. The reverse shows a limestone cliff of the northern coast and sea waves — a characteristic natural landscape of Estonia.

The banknote is suitable for both beginner and experienced collectors interested in Europe. The clear portrait and expressive natural design make it a distinctive piece in any collection.