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50 Rupiah Blank Planchet
| Issuer | Bank Indonesia |
|---|---|
| Year | 1971 |
| Type | Log in to see details |
| Value | 50 Rupiah 50 IDR = RSD 0.29 |
| 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 | Uniface blank planchet; the obverse field is entirely unworked and devoid of any design, legend, effigy, or device. The copper-nickel surface displays the characteristic texture of an unstruck or trial planchet, with a raised rim visible at the periphery resulting from the upsetting mill process. |
|---|---|
| Obverse script | Log in to see details |
| Obverse lettering | Log in to see details |
| Reverse description | Uniface blank planchet; the reverse field is likewise completely plain and unstruck, bearing no inscription, device, or decorative element of any kind. The raised collar rim is present around the circumference, confirming the planchet was properly upset and prepared for striking but never received die impressions. |
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| Additional information |
Blank planchets escaping the mint before striking are errors of opportunity — they slip through when press operators or quality control staff fail to catch unstruck discs moving along the feed system. Indonesia's state mint in Semaran (later consolidated under Perum Peruri, established in 1971) was scaling up domestic production capacity precisely during this period, making process control lapses more plausible than in a long-stabilized operation.