Twenty Pence 2022 Gold Proof in an NGC holder and graded PF70 Ultra Cameo, at the time of writing only 2 examples had been graded by NGC, with no examples graded by PCGS, the set containing this coin no longer listed on the Royal Mint website, the Twenty Pence to One Penny issues are at present only available as part of the long set
Estimate: GBP 450 - 550