2022 Piedfort Sovereign Proof Reverse 2022 Piedfort Gold Sovereign Proof – Elizabeth II - The 2022 Gold Sovereign Piedfort version is twice the weight (15.98g) and about twice the thickness of the standard 2022 gold sovereign.
2017 Piedfort Gold Sovereign Reverse 2017 Piedfort Gold Sovereign - The 2017 Piedfort Gold Sovereign. 2017 was a first for the UK - a double thickness gold sovereign.