Stackable Keg

FIG. 1 is a top, front and right side perspective view of a stackable keg showing my new design;

FIG. 2 is a bottom, front and right side perspective view thereof;

FIG. 3 is a front elevational view thereof; the rear elevational view being identical;

FIG. 4 is a left side elevational view thereof; the right side elevational view being identical.

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines in FIGS. 1 , 3 , 4 and 5 showing a portion of the top of the keg and two fittings are for the purpose of illustrating portions of the keg that form no part of the claimed design.