[Jim McDougall]

This is a beautiful sword, but most of the corresponding material I can find suggests that the PRO FIDE ET PATRIA motto was often used by Solingen makers around early to mid 17th century on blades.
This type blade indeed does seem 17th century and while it may be Solingen made, the distinctive 'sickle' or eyelash mark with 'cogwheels' at end of each arc corresponds to such markings of Belluno and Venice from c.1600-30.

These markings are from schiavona examples (Boccia & Coelho, 1975, 491,92,96) which are from that period (one is marked to the 'Council of Ten', CX) .
The examples are very much in the same form hilt, which is with the same pommel and trellis hilt.

While these findings suggest that this sword is indeed a schiavona with a blade which may well be Italian, but with that inscription and style of lettering more likely Solingen but still of very early 17th c.

Although obviously this would tell us this sword is as it seems, a schiavona, and this appears to be a German or Italian blade as noted, therefore cannot reach the 1536 date indicated, there are always other answers.

The Spanish colonization of these regions of course was pronounced in these times, and it would not be surprising for conquistadors of early 17th century to have examples of schiavona. It is well known that many, if not even most, of the familiar morion helmets which characterize conquistadors were actually Italian. Possibly this sword was indeed to one of the Spanish officers of this later period, and the name inscribed into the blade was a commemorative gesture?

It would seem to respond to conquistador presence there, and honoring the founders of these settlements a century before. It is not uncommon for weapons bearing a famed name or event commemoratively to be of that person or event.

Thank you so much for posting this beautiful example!! and compliments to this museum for most attractive displays.