20 Pounds Royal Bank of Scotland

The Royal Bank of Scotland's £20 note occupied an awkward commercial tier for most of this issue's long run — high enough in value to be handled almost exclusively by businesses and clearing accounts, low enough that it never achieved the near-ceremonial rarity of the £100. That usage pattern, rather than any survival disaster, is why genuinely circulated examples from the earlier decades of this range are harder to find than uncirculated bank stock.

The Pick 319 designation covers nearly ninety years of issue, spanning two world wars, the nationalization debates of the postwar period, and multiple paper shortages that affected Scottish note production across all issuers. Within that span, signature combinations and date ranges matter far more than the Pick number alone.