Meticulously drilled and cut by hand from an actual one kuna coin from Croatia. It features a nightingale.

The common nightingale, also called the rufous nightingale or simply nightingale, is a bird known for it's powerful and beautiful song. The name is derived from the words "night" and the Old English "galan" which means "to sing." This comes from the fact that they sing at night as well as during the day. It has long been a symbol associated with poets and poetry, and is the Croatian national bird.