I also have a orange blade Flex-A-Lite fan blade. I had this on my 1970 LS5 Chevelle for a few thousand miles and it performed perfectly. It was NOS until my use. You can see where the bolts went into it, now it has the indentions. I heard all the horror stories about how these exploded and went through peoples hoods, etc. Hogwash. I had no such experience. This is usually said by the same type of people that say bias ply tires are dangerous to drive on.
I would be willing to sell it for $60.00 + actual cost shipping.