Redundant how? An implement can be nonmanual - e.g., divine. Therefore, the adjective is obviously required, therefore it is not even remotely redundant.
Let us recap:
your post 1931:
"PS. If you can find me a manmade object that cannot be identified as such via evidence of the application of manual implements, or alternatively of a non-manmade object that evidences the application of manual implements, then I'll reconsider."
I suggested a clay figurine which would be manmade but without implements.
You then equated hands with "manual implements" and then suggested that an implement could be divine, requiring the use of "manual" to modify "implement".
My suggestion is that the terminology, as you are using it, could be confusing.
And my next boundaries question is how you would deal with a hand twined piece of fiber, say from a rotted piece of a a nettle or flax.