M2 Medium Tank - M3 Grant Turret TestbedThis unique variant of the M2 Medium Tank represents a pivotal moment in American tank development history. Used as an engineering testbed for the M3 Grant turret system, this configuration bridges the gap between pre war and wartime tank design philosophy. Historical Significance: Experimental platform that validated the M3 Grant's turret concept Critical step in the evolution from the M2 to the M3 Medium Tank Rare configuration that saw limited