50 Arabian Pounds

The Hejaz £50 note of 1924 is among the rarest issues from this short-lived kingdom. Sharif Hussein bin Ali had declared himself King of the Hejaz in 1916, but by 1925 Ibn Saud's forces had swept him from power entirely, rendering the entire Hejaz paper currency series obsolete almost immediately after issue.

Pick lists this series with extreme rarity ratings across all denominations, but the higher values — this note among them — were almost certainly printed in far smaller quantities and saw negligible circulation before the political collapse. Survivors are genuinely uncommon.