Great Britain
George V Proof Crown 1931 PR63 NGC, Royal mint, KM836, S-4036. A very rare proof, with glossy reflectivity over the surfaces as is always the case for the issue, and only faint tone on both sides. Minimally handled, with a single thin mark in George's hair, perhaps caused by a staple, preventing what would have otherwise likely been a Gem grade.
Estimate: 2000-3000 USD