10 Riyals

The Saudi Arabian Monetary Agency's earliest note series was printed by De La Rue under arrangements dating to SAMA's founding years, when the agency was still consolidating Saudi Arabia's monetary system away from the silver riyal and the various foreign currencies that had circulated freely across the Hejaz and Najd. This 10-riyal issue falls within a transitional window when oil revenues were beginning to reshape government finances but formal central banking infrastructure remained thin.

P#13 is among the scarcer denominations from the series. The watermark is the sole mechanical security feature — no security thread, no fluorescent elements — which reflects De La Rue's approach to the Saudi contract at the time.