I also think yours are the original leads, and the instruction manuals for the 5D and 5F both clearly state in the parts inventory that the second pair of leads has a blade ('U') connection at one end which is what is seen in your picture and an crimped uninsulated banana at the other end.
I will have to take a better picture of the connector on the end of the spade leads. It's not like any uninsulated banana plug I've seen.