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1 Rupiah
| Issuer | Bank Indonesia |
|---|---|
| Year | 1970 |
| Type | Standard circulation coin |
| Value | Log in to see details |
| Currency | Log in to see details |
| Composition | Log in to see details |
| Weight | Log in to see details |
| Diameter | Log in to see details |
| Thickness | Log in to see details |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | Latin |
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| Reverse description | Log in to see details |
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| Reverse lettering | Rp1 |
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| Additional information |
Indonesia's aluminium small denominations of this period were struck as the country clawed back economic stability following the catastrophic hyperinflation of the Sukarno years, when prices had risen over 600% annually by 1965. The transition to Suharto's New Order government brought a sweeping monetary reform program — the rupiah was redenominated in 1965 at 1000:1 before these coins ever entered production.
Aluminium was chosen specifically to keep intrinsic metal value well below face value, a lesson learned painfully from earlier issues that disappeared from circulation the moment their composition became worth more than their denomination.