Thanks a lot, Dmitry,
For posting the images together with your remarks, which in my eyes are absolutely correct!
I thought I saved anything published by the Philly to my hard disc but this item was missing so far.
A dating of 'ca. 1400' is way off indeed.
For comparison, attached please find images of a fine 1520's' horseman's axe, the haft twisted in the same early-Italian Renaissance fashion, and a contemporary North Italian arquebus barrel.
Thanks again, and best,
Michael