100 Pounds - Elizabeth II Joshua Abraham Hassan

Gibraltar's 2015 polymer series marked the territory's first move away from cotton-fibre substrate, issued partly to align with broader Commonwealth currency modernisation but also timed to coincide with the 300th anniversary of British Gibraltar. The £100 denomination is the highest face value in the series and circulates rarely — most are held by collectors or used in occasional large transactions, which means worn examples are genuinely uncommon for a reason unrelated to scarcity at the press.

Hassan served as Chief Minister for a combined total of over two decades across two separate tenures, a record that made his selection for the highest-value note politically uncontroversial in a way that choices on lower denominations sometimes were not.