Coinage of Switzerland

[chrisild]

Since you mentioned nicknames of US coins, in Switzerland the 5 fr has one as well. Or rather two: in German "Fünfliber", referring to the old French 5 fr coins which used to circulate in Switzerland too. The French franc was based on the livre (pound, libra, liber ...). Now its French nickname "Thune" is derived from an old slang word referring to alms, see here.

[<k>]

At least the German word for five (fünf) appears in that nickname.

The German old 5 Pfennig coin had "Sechser" (sixer) as a nickname. 

Apparently it was equivalent in value to the former 6 groschen.

[chrisild]

Almost. The term "Groschen" was widely used in Germany (originally 12 Pf, then used for the 10 Pf coin). A "Sechser" would be half of that, except it was a regional term (Berlin etc.) only. Never used that word in my life.

In Switzerland (Swiss German) you may hear "Batzen" for the 0.10 coin. When the Swiss Franken was introduced in 1850, that denomination was closest to the former Batzen coin (e.g. here). But as far as I know, the word – referring to the coin – is not common any more.

[<k>]

Yes, I first heard the term 'Sechser' in West Berlin, circa 1979.