Great Britain 1927 George V Proof Silver Crown NGC PF-65 OLD SLAB! UNDERGRADED15 Aug, 2024 in great tagged britain / crown / george / great / pf-65 / proof / silver / slab / undergraded by admin Great Britain 1927 George V Proof Silver Crown NGC PF-65 OLD SLAB! An extraordinary specimen with distinguished reflectivity. Mintage: 15,000 in Proof.