I'd love to identify this prop blade...

The title says it all. The blade is approximately 75" long. I hope someone can do something with these numbers. Thanks!

Hamilton Standard 6501A-0 blade. Very popular blade used on Vought Corsairs and probably many other aircraft. Here's a shot of 6501A-0 blades on a corsair. The gray paint with red/white tips and the rubber anti-icing boot on the leading edges lead me to believe that these were post war, civilian versions of this blade, perhaps off of a Douglas DC-4?

They were the 13 foot basic diameter propeller blades, used as mentioned on the F4U both 3 and 4 blade propellers, the Grumman TBF/TBM, the DC-4, plus possibly others. As three bladed they were used in the 23E50 Propeller, as four bladed they were used in the 24E50.