4 Reales - Philip V

Philip V reclaimed the Spanish throne in 1724 after abdicating in favor of his son Luis I, who died of smallpox just seven months into his reign. The Potosí mint was producing cob coinage — macuquinas — through much of this period, hand-struck on irregular planchets cut from silver bars. The transition away from cob coinage toward milled pieces was already underway in Mexico City but lagged considerably at Potosí, meaning this type straddles the final decades of a minting tradition that had run largely unchanged since the 1570s.

KM#30a specifically reflects the assayer transition at Potosí during these years, with multiple assayer initials known within the type.