5 Dollars Barclay's Bank

Barclays Bank (Dominion, Colonial and Overseas) was itself a relatively new entity in 1926, formed just four years earlier through the merger of Colonial Bank, Anglo-Egyptian Bank, and the National Bank of South Africa. The DCO structure was explicitly designed to consolidate British commercial banking across the empire under a single balance sheet, and note-issuing rights in various territories came bundled with those absorbed institutions.

Bradbury Wilkinson's involvement is the technically interesting detail here. Their New Malden facility produced currency and security printing for dozens of colonial and dominion issuers simultaneously, which means the plate design and paper specifications would have followed their house standards rather than any local authority's brief.

The P#S106 prefix places this in Pick's commercial bank series — not a central bank issue.