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| Issuer | Reserve Bank of India |
|---|---|
| Year | 2025 |
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| Weight | 40 g |
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| Obverse script | Devanagari, Latin |
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| Mintage | 2025 ♦ - UNC - 2025 M - Proof - |
| Additional information |
The India Meteorological Department was established in 1875, making it one of the oldest scientific agencies on the subcontinent — predating the partition, both world wars, and Indian independence itself. Its founding was driven largely by the catastrophic Calcutta cyclone of 1864 and a series of subsequent famines partly attributed to failed monsoon forecasting, which forced the colonial administration to treat systematic meteorology as a matter of administrative survival rather than scientific curiosity.
This 2025 issue marks the department's 150th anniversary.