Exterior surface of a container sidewall
FIG. 1 is a top, rear and right side perspective view of an exterior surface of a container sidewall showing my new design; 
     FIG. 2 is a front elevational view thereof; 
     FIG. 3 is a right side elevational view; 
     FIG. 4 is a rear elevational view thereof; and, 
     FIG. 5 is a top plan view thereof. 
     The neck shown at the top in broken lines is for illustrative purposes only and forms no part of the claimed invention.