The R50 (1oz, sterling-silver) coin, the R500 (1oz, 24-carat gold) coin, the R50 (base metal alloy), as set out in Section (a) of the Second Schedule to the said Act, which will be manufactured, and will be issued by virtue of section 16(1) of the said Act, will be legal tender as from 1 May 2017; and that the specifications of the said coins are as follows: