5 Dollars John Adams

Barbados switched from the Eastern Caribbean Dollar system to its own independent currency in 1973, pegging the Barbadian dollar to the US dollar at a fixed rate of 2:1 — a peg that has held without interruption for over fifty years, one of the longest-standing fixed exchange rates in the Western Hemisphere. The decision to issue a silver piece denominated in Barbadian dollars honoring a US president sits in that long shadow of monetary alignment.

Adams was the first US president to occupy the White House, moving in during November 1800 with construction still incomplete.