An exact determination is extremely hard to accomplish. All I can say is that in general, the closer the form, staging and decoration of the hammer to both the papal hammer and the quillon ends of Cornelis's sword the higher the probability that it may be Italian and early.
Remember that Italy lies close to oriental neighbors and their styles intertwined very easily and quickly.
The second from right tool on your image seems to come pretty close to my earliest piece.
Michael
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