In 1737, the Ottoman Empire was grappling with a severe and chronic currency crisis, a manifestation of its deeper economic and military struggles. The primary issue was the drastic debasement of the silver
akçe, the empire's traditional unit of account, and the widespread circulation of unstable foreign coins, particularly the Spanish
piastre (or
riyal guruş). To finance its prolonged wars, especially against the Habsburgs and Russia (as part of the Austro-Russian-Turkish War, 1735–1739), the state repeatedly resorted to clipping the silver content of its coinage. This created a classic vicious cycle: minting inferior coins generated short-term revenue but triggered inflation, a loss of public confidence, and the hoarding of older, purer coins, which further exacerbated the shortage of sound money.
The monetary system had effectively become bimetallic and chaotic. Large transactions were dominated by the
guruş, a heavy silver coin often minted from melted foreign currency, while the chronically debased
akçe served for small change. The disparity between the official nominal value of coins and their intrinsic metallic value led to rampant speculation and market confusion. Money changers (
sarrafs) gained significant power, manipulating exchange rates and creating a complex, unstable financial environment that hampered both trade and state treasury (
Hazine) operations. The government's attempts to fix exchange rates by decree (
narh) were largely ineffective against market forces.
This financial instability directly undermined the Ottoman military campaign. Soldiers, particularly the Janissaries, were paid in devalued currency, leading to frequent mutinies and a decline in military effectiveness. The crisis of 1737 was not an isolated event but a acute phase of a long-term structural decline, highlighting the empire's difficulty in adapting its pre-modern fiscal structures to the pressures of global flows of precious metals and protracted warfare on multiple fronts. The eventual Treaty of Belgrade in 1739 would bring territorial gains but no resolution to the underlying monetary disorders that would continue to plague the empire for decades.