20 Dollars

The P#21 series was introduced as part of a broader redesign that consolidated several denominations under a unified thematic approach tied to local cultural heritage. Thomas De La Rue handled the print run from their London facility, as they did for the majority of Pacific Island note production through this period — the Solomon Islands had no domestic printing infrastructure and relied entirely on contracted foreign printers throughout the twentieth century.

Security provisions on this issue are modest by later standards: a plain security thread and watermark only, with no metallic or color-shifting elements. De La Rue would upgrade the series within a few years.