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100 Rials Islamic Republic
| Issuer | Central Bank of the Islamic Republic of Iran |
|---|---|
| Year | 1985-2006 |
| Type | Standard circulation banknote |
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| Obverse description | Intaglio portrait of Ayatollah Sayyid Hassan Modarres, the Iranian Shia cleric and parliamentarian, occupies the right side of the note, rendered in purple against a multicolour guilloche underprint. To the left, a vignette of a pointed arch mihrab with geometric tilework decoration is set within a fine-line rosette medallion at centre. Ornate arabesque borders frame the left and right edges, with the denomination numeral '100' in Eastern Arabic script at upper right and lower left. |
|---|---|
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| Signature(s) | Dr. Mohsen Noorbakhsh & Dr. Hossein Namazi watermark: Dr. Mohsen Noorbakhsh & Mohammad Djavad Iravani Majid Ghassemi & Mohammad Djavad Iravani Mohammad Hossein Adeli & Dr. Mohsen Noorbakhsh Mohammad Hossein Adeli & Mohammad Khan Dr. Mohsen Noorbakhsh & Dr. Hossein Namazi watermark: Khomeini small serial# Dr. Mohsen Noorbakhsh & Dr. Hossein Namazi watermark: Khomeini large serial# Dr. Ebrahim Sheibani & Safdar Hosseini watermark: Khomeini Dr. Ebrahim Sheibani & Safdar Hosseini watermark: |
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| Comments |
The 100 Rial note is effectively the lowest practical denomination in the Islamic Republic's post-revolutionary currency structure, and by the 1990s rampant inflation had reduced its purchasing power to near nothing — it remained in production largely for institutional completeness rather than genuine utility. Thomas De La Rue printed the series throughout its run, a relationship that survived the 1979 revolution and subsequent U.S.-led sanctions pressure with surprisingly little interruption.
The watermark transition mid-series — from the earlier design to the Khomeini portrait watermark — tracks directly to a broader security upgrade implemented across multiple denominations in the late 1990s. The serial number size variant within the Khomeini watermark issues (Pick 140h versus 140i) is a minor but catalogued distinction that catches out incomplete collections.