50 Dollars

Barbados switched to polymer for this denomination as part of a broader regional push toward substrate modernization — the Eastern Caribbean has been incrementally adopting polymer since De La Rue began supplying Guardian substrate notes to smaller island economies. Barbados, operating its own central bank rather than through the ECCB, made the transition independently and on its own timeline.

The transparent window on this note is integrated into the polymer substrate itself rather than applied as a separate patch — a distinction that matters for authentication. De La Rue's Safeguard polymer incorporates the window during manufacture, making it structurally inseparable from the note.