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| 正面描述 | 登录 以查看详情 |
|---|---|
| 正面文字 | 登录 以查看详情 |
| 正面铭文 | mw RZECZPOSPOLITA POLSKA 2020 |
| 背面描述 | 登录 以查看详情 |
| 背面文字 | 登录 以查看详情 |
| 背面铭文 | 登录 以查看详情 |
| 边缘 | 登录 以查看详情 |
| 铸币厂 | 登录 以查看详情 |
| 铸造量 | 2019 MW - - 1,000,000 2020 MW - - 94,230,000 2021 MW - - 42,795,000 2022 MW - - 79,515,000 2023 MW - - 91,800,000 |
| 附加信息 |
Poland switched its circulation coinage to steel-core planchets in stages beginning around 2013, driven primarily by rising copper and nickel commodity prices making the older solid copper-nickel pieces increasingly expensive to produce. The 20 groszy was among the later denominations converted, with the magnetic plated-steel version entering production for the 2019 dated issues. Vending machine operators and transit systems required recalibration of magnetic sensors across the country following the changeover.