1/2 Rial

The half-rial denomination was introduced into the Omani series partly to address the practical gap left by the 100-baisa note in everyday retail transactions — Oman retained a relatively high-value base currency, and small notes genuinely earned their keep in circulation. Thomas De La Rue had held the Omani contract continuously since the first modern Rial Saidi issues of the early 1970s, and by the time this 1987 series appeared, the relationship was well-established enough that design continuity across denominations was tightly controlled from London.

P#25 is the second signature variety within this series, a detail that matters to specialists assembling complete runs.