The song comes from the album 'Guarapachanga' which is from 1964, according to Discogs.
Unfortunately Discogs doesn't have a photo of the reverse of the sleeve, but here's the front if anyone wants to try to find a copy in a junk store.
Discogs does, however, link to a YouTube video of one of the other tracks on the album, which seems to be a studio job, not live, and the tres is NOT played on a fender. So, I guess, if you're playing with a band full of trumpet players and you want your tres to be heard, you'll organise yourself a fender and string it the tres way, plug in and play.
No big deal, but not traditional.
By the way, the band is still going. It started in 1950, when Arsenio left Cuba and moved to the USA and some of his musicians carried on together.
MG