10 000 Shillings / 500 Pounds - George VI

The East African Currency Board's highest denomination note had a practical purpose that sat uneasily with its face value: it circulated primarily between commercial banks and the larger trading houses, not in any meaningful retail sense. Ten thousand shillings — or five hundred pounds sterling — was a sum that placed the note entirely outside ordinary transactional life in British East Africa.

The 1939 start date matters. Wartime exchange controls severely restricted currency movement across the region, and notes of this denomination became instruments of internal interbank settlement precisely because cross-border transfers through London were curtailed.

De La Rue's watermark on this series is a simple but effective deterrent — counterfeiting at this denomination would have required both sophisticated equipment and access to a credible distribution network, neither of which existed in the region during the war years.