That drawing # is for the shank of the blade.
You need to look for the 6501A-0, 6507A-0, 6519A-0, OR 6547A-0 marked on the blade butt. The "-0" is the diameter reduction from nominal as these are 13 foot diameter propellers, so the blade is half that less about 3 inches for the center of the hub where it mounts. You said in the other post that it is 66 1/2" tall so it could a shortened blade.