Re 1 British India Banknote Year 1917 Signed By M M S Gubbay Ultra Unique and Rare Delhi Circle Extreme Unique

When the British Raj first issued these one-rupee notes to combat wartime silver shortages, they initially intended to issue them by specific circles (such as Bombay, Calcutta, Madras, Karachi, and Cawnpore). However, the vast majority of M.S. Gubbay notes were quickly Universalised. This meant they were legally valid nationwide across all circles to simplify circulation. Delhi was not a separate currency circle for this denomination. If someone is marketing a note as an "Extreme Unique Delhi Circle," it is likely a misinterpretation of a regional treasury stamp added post-production or misleading auction