Fr-284; KM-418.1a; Cal-Type-37#315. Madrid mint. The single finest graded at NGC and PCGS. An exquisite example with denticles so sharp and crisp they look like a 20th century product. Highly reflective fields that are just shy of prooflike, and free of major marks or abrasions. Booming yellow gold luster and central devices that are as strong as the periphery all combine to produce an extraordinary example of the type. A coin sure to see heated competition for ownership at this finest graded level.，NGC MS-64.，
