2 Reales - Carlos II Madrid

Carlos II, the last Habsburg king of Spain, ruled under regencies and court factions for most of his reign — his mother Mariana of Austria governed as regent until 1675, and the chronic instability of his administration directly affected mint output and quality control. The Madrid mint during this precise window was transitioning away from the older milled coinage standards introduced by Philip II, and production inconsistencies in the early 1680s are well documented.

Cal#577 is a tight attribution. Cayon's cataloguing of this type distinguishes several die marriages from this period; misattributions between assayer marks are not uncommon in the trade.