5 Dollars - Elizabeth II Berlin Wall

Issued to mark the thirtieth anniversary of the Wall's fall on November 9, 1989, this Solomon Islands piece belongs to a sprawling category of Pacific island nation commemoratives produced almost entirely for the international collector market — the issuing state has no historical connection to the subject whatsoever. The Central Bank of Solomon Islands has licensed its name to dozens of such pieces, a common arrangement in which the nominal issuer retains a small royalty while a European mint handles design, production, and distribution entirely.

The Wall itself stood for 28 years, 2 months, and 27 days — shorter than many assume.