This set contains all five Sovereign denominations issued in 2021, featuring the special Queen Elizabeth 95 years privy mark in one exclusive set. It is the only way to own a 2021 Proof Five-Sovereign Piece, which is exclusive to this set.
The Royal Mint says about the set:
"In 2021, the coins of The Sovereign family mark Her Majesty’s 95th birthday with a unique ‘95’ privy mark, while The Sovereign itself has a milled edge featuring 95 mills in her honour. The crown privy mark has been struck on all five coins in this prestigious set, including The Double-Sovereign and Five-Sovereign Piece, which have long been regarded as collector pieces. The Double-Sovereign is exactly twice the weight of the single Sovereign, while The Five-Sovereign Piece contains almost 40 grammes of 22 carat gold. The Sovereign 2021 Five-Coin Set contains every coin in The Sovereign family, from The Quarter-Sovereign to The Five-Sovereign Piece, with the latter only available with our finest Proof finish as part of this set."