We'll all go rappen with the Swiss in 1850 with this 1850BB 20-rappen coin (KM 7). I share coin_nut's affinity for big silver (Ag) coins. Sadly, this is silver but not so big.
A short cruise takes us to beautiful Monaco with a 1951 ten francs (KM 130). I just read somewhere that the Grimaldi family has been running the place for about 750 years. Sheesh, that's a long time to retain a title to land, yes?