Wow, interesting problem.
I would try the following:
1. put a magnet against it. Iron bells will stick, brass/bronze will not.
2. Try a rubbing (thin paper over the date and rub gently with pencil) to see if you can bring out the date better.
3. Copy out all of the inscriptions so that we have more to go on. They will give clues.
The S. appears to be St. in your photo, so "St. vicente viva Jesvs" translates to (I believe) "Saint Vincent loves Jesus"
There are a number of possibilities arising from that so we really need the date.
A couple examples:
The capture of St.Vincent Islands in 1796 (if the 2 is a 9 in your date, can't tell in the photo)http://www.pbenyon.plus.com/Naval_Histo ... P_369.html
John of the cross had "Vicente" in his name as well, and he was Canonized by Pope Benedict XIII in 1726, so a commemorative bell for that would also be possible:http://wn.com/San_Juan_de_la_Cruz__Vice ... _amor_viva
As I recall there was a Mexican General by that name that lead Mexico in the Spanish American war that ended in about 1726 as well. (My history knowledge of Mexico is a bit shaky though.)
So the date and rest of the writing would be a great thing to get.