I have tried to visually replicate a worn die by blurring the scorpion as wear is a kind of blurring of detail.
In the attached the top image is a blurred version of the lower image and it does replicate some of the lack of detail in the pennon being discussed.
Top blurred from...
.... original detail image
Bottom: Ebay pennon
I am tending to lean towards a very worn die at the end of its production life on this pennon example. Maybe this was the catalyst to changing the scorpion design used in the later pennons