Great Britain
William IV gold Proof 1/2 Sovereign 1831 PR61 NGC, Royal mint, KM716, S-3830. A fairly scarce Proof issue, exhibiting a fair amount of hairlines consistent with the grade assigned and also with many of the Proofs of the era, which unfortunately saw some wiping early on in their lifetime.
HID02901242017
Estimate: 1800-2400 USD