Zero-prototype replica.

On display at Gifu-Kakamigahara Air and Space Museum. As compared to A6M2 production models, several differences are visible in this replica of the prototype Zero that include a Sumitomo Hamilton constant speed two-blade propeller without spinner that would have been connected to a 780hp engine, no visible carburetor air intake in the cowling, a shallow oil cooling air intake under the engine and an antenna angled at 20 deg.