In Economic theories, the formation of Common Currency Area and application of Common Currency, could lead to the transparency of prices, more transfer of foreign direct investment owing to reduction of exchange rate fluctuation, greater availability of factors of production, widening the accessibility to labor and financial markets, decrement of transaction costs, promotion of intra-regional and intra-industrial trade between the member countries, sui generis. In this paper, an attempt is made to study the feasibility of formation of Common Currency Area, within the ECO members viz-a-viz utilization of three variable Structural Vector Auto Regression (SVAR) model, to examine the simultaneity of structural shocks amid the ECO Countries for the period 1980-2012. The results prima facie indicate that, the pattern of impulse response of macroeconomic variables to structural shocks and also their speed of adjustment to shocks are symmetric in the sub-group of Afghanistan, Kazakhstan, Pakistan, and Tajikistan. Moreover, we observe that the sources of fluctuations in macroeconomic variables in all ECO member countries are the same in toto. Thus, we have found that, the sub-group of four mentioned countries may implement a unique policy formulation for adjustment of their macroeconomic variables against the mence of structural shocks, and sine qua non the formation of an Optimal Common Currency Area is not only feasible for these Countries but it may also bear spill over benefit for the economic set ups of the region Ipso facto.