60 Para - Mahmud II Kostantiniyye mint

The 60 Para denomination was introduced under Mahmud II as part of a broader currency reorganization following decades of debasement that had reduced the Ottoman silver coinage to near-worthless fractions. By the 1820s the empire was simultaneously fighting the Greek War of Independence and managing the political fallout of the Janissary abolition in 1826 — the Vaka-i Hayriye — which freed up treasury resources previously consumed by a military caste that had become more political liability than fighting force.

The .600 fineness reflects a compromise between fiscal reality and maintaining credibility in Levantine trade circuits, where merchants routinely tested coin silver by touch and assay.