Ham8
S. Al Anizi is of course correct, as previously discussed. These are the words in the so called 'Spanish motto' and these trade blades were typically manufactured in Solingen for the Spanish market from late 18th to early 19th centuries. These blades were however typically shipped to Spain's colonies in Mexico where they were often mounted in European cavalry hilts. This hollow ground sabre blade in more characteristic of sabre blades of the turn of the century, and probably dates, as mounted in about 1830's. It is curved and single edged, where the 18th century blades with the motto were broadsword blades, and seemed unusual mounted in sabre hilts.
These are fascinating swords, as they are representative of the extremely colorful history of Mexico, and found use well into the 19th century, even into the early 20th, often with the national rural police force known as the 'Rurales'. These mounted forces were originally founded by Benito Juarez in 1867, and used all manner of surplus and heirloom weaponry.
Best regards,
Jim
P.S. I was the poster who mentioned the Mexican swords thread

and I'm glad you found our discussion there informative. Hopefully this information will also be helpful. Also that hilt appears to be German from about end of 18th c. but haven't pegged it for sure yet

This simply suggests the sword might have been put together in Germany, possibly went to Spain and it would be unclear whether it ended up in Mexico.....we just know that many like this did. I have seen very similar examples marked 'Sahagun' in large etched letters like this that are typically considered 'Spanish Colonial'.