Whereas under section 3(1)(a), (b), (cc), (cd), (d) and (dd) of the Coinage Act 1971 We have power, with the advice of Our Privy Council, by Proclamation to determine the denomination, the design and dimensions of coins to be made at Our Mint, to determine the weight and composition of coins other than gold coins or coins of silver of Our Maundy money, and the remedy to be allowed in the making of such coins, to provide for the manner of measurement of the variation from the standard weight of coins, and to determine the percentage of impurities which such coins may contain:

And Whereas under section 3(1)(f) and (ff) of the Coinage Act 1971 We have power, with the advice of Our Privy Council, by Proclamation to direct that coins made at Our Mint other than gold, silver, cupro-nickel and bronze coins shall be current and that any coin shall be legal tender for the payment of any amount:

And Whereas under section 6(2) of the Coinage Act 1971 We have power, with the advice of Our Privy Council, by Proclamation to prescribe the composition of the standard trial plates to be used for determining the justness of coins of any metal other than gold, silver or cupro-nickel:

And Whereas it appears to Us desirable to order that there should be made at Our Mint a new coin of the denomination of one hundred pounds in platinum:

We, therefore, in pursuance of the said section 3(1)(a), (b), (cc), (cd), (d), (dd), (f) and (ff), the said section 6(2), and of all other powers enabling Us in that behalf, do hereby, by and with the advice of Our Privy Council, proclaim, direct and ordain as follows:

ONE HUNDRED POUND COIN

1. (1) A new coin of platinum of the denomination of one hundred pounds shall be made, being a coin of a standard weight of 31.21 grammes, a standard diameter of 32.69 millimetres and being circular in shape.

(2) In the making of the said platinum coin a remedy (that is, a variation from the standard weight or diameter specified above) shall be allowed of an amount not exceeding the following, that is to say:

(a) a variation from the said standard weight of an amount per coin of 0.15 grammes; and

(b) a variation from the said standard diameter of 0.125 millimetres per coin.

(3) The said platinum coin may contain impurities of five-tenths of one per centum.

(4) The variation from the standard weight will be measured as the average of a sample of not more than one kilogram of the coin.

(5) The composition of the standard trial plates to be used for determining the justness of the said platinum coin shall be pure platinum.

(6) The design of the said platinum coin shall be as follows:

‘For the obverse impression Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 100 POUNDS”, and for the reverse the figure of Britannia standing upon a rock in the sea, her right hand grasping a trident and her left hand resting on a shield and holding an olive branch with the inscription “· BRITANNIA · 2017 · 1OZ · 999.5 · PLATINUM ·”. The coin shall have a grained edge.’

(7) The said platinum coin shall be legal tender for the payment of any amount in any part of Our United Kingdom.

2. This Proclamation shall come into force on the fourth day of May Two thousand and seventeen.

Given at Our Court at Buckingham Palace, this third day of May in the year of Our Lord Two thousand and seventeen and in the sixty-sixth year of Our Reign.

GOD SAVE THE QUEEN