Great Britain
George IV Crown 1821 AU50 NGC, KM680.1, S-3805. "Secundo" on edge. Light wear with even, gun-metal patina. Common in low grades but gets rapidly scarcer in XF and AU. Krause catalog price(s) for this item: $185 in VF, $900 in EF, $2400 in UNC.
Estimate: 600-800 USD