South African Reserve Bank Act: Dimension, design and compilation of 2015 R15 (Crown) Sterling Silver Coin Series (Gazette, Notice R182)
https://www.polity.org.za/article/south-african-reserve-bank-act-dimension-design-and-compilation-of-2015-r15-crown-sterling-silver-coin-series-gazette-notice-r182-2016-01-18
18th January 2016
South African Reserve Bank Act: Dimension, design and compilation of 2015 R15 (Crown) Sterling Silver Coin Series (Gazette, Notice R182)