Belgium
Leopold I Proof 1/2 Franc 1833 PR67 NGC, KM6. The first year from this ephemeral series and one of the key dates as well, with outstanding flash in the fields and surfaces that are drenched in electric-blue and vibrant fuchsia at the centers. A conditional jewel with instant appeal, about as choice as can be in this near-pristine state of presentation.
Estimate: 1500-2000 USD