tl;dr it isn’t Latin Latin - a lot of swords had tons of odd spellings and there are theories about why that is. This sword could be a combo of acronyms of Latin words and possibly spelling errors.
For example, “I’d like a sword named Christmas” -> “Please make me a sword that says XMAS” -> sword that says XMS
https://languagelog.ldc.upenn.edu/nll/?p=20639
tl;dr it isn’t Latin Latin - a lot of swords had tons of odd spellings and there are theories about why that is. This sword could be a combo of acronyms of Latin words and possibly spelling errors.
For example, “I’d like a sword named Christmas” -> “Please make me a sword that says XMAS” -> sword that says XMS