500.000 Rials

Bank Mellat is not a central bank — it is one of Iran's large state-owned commercial banks, which makes this note unusual. Central bank issuance in Iran falls to Bank Markazi; a 500,000-rial denomination carrying a commercial bank's name suggests this is either a certified cheque, a bank draft, or a cashier's instrument rather than a circulating banknote in the conventional sense. The Pick number is unassigned, which is consistent with that ambiguity.

Without a confirmed Pick reference, the precise printing source and full security specification remain unverified. The serial numbering and security seal are minimal features for a denomination of this size, pointing toward internal institutional use rather than open retail circulation.