Double Cruzado coin of Joannes VI (Spain)

Coin. Silver. Double cruzado of Joannes VI. Obv., royal crown with value (960 reis), and date within a wreath, and legend; rev., cross, surmounted by an armillary sphere bearing the shield of Portugal, with legend Portuguese. Date 1820. Diam. 1 5/8 inch. (Millard Bequest.) V&A no. 1547-72.