Yirmilik - Abdülhamid I Konstantiniyye Mint

The yirmilik — a twenty-para piece — was among the debased silver denominations that proliferated during the chronic fiscal strain of the mid-to-late eighteenth-century Ottoman treasury. Abdülhamid I came to the throne in 1774 after spending over forty years confined in the kafes, the palace apartments where Ottoman princes were isolated to prevent succession challenges. This 1773 piece predates his accession by a year, placing it under Mustafa III, whose reign saw mounting war debts from the disastrous 1768–1774 conflict with Russia that culminated in the Treaty of Küçük Kaynarca.

The Konstantiniyye mint was the empire's primary striking facility throughout this period. Billon at this fineness reflects deliberate debasement policy, not accident.