An early F4U-1 showing the “birdcage” canopy with rearwards production cockpit location

An early F4U-1 showing the "birdcage" canopy with rearwards production cockpit location. Compare with the XF4U-1.

An early F4U-1 showing the “birdcage” canopy with rearwards production cockpit location. Compare with the XF4U-1.