The question already has been answered conclusively. Carmen won a 10-round decision over Gaspar on January 7, 1961. www.youtube.com/watch?v=ZMZtDWWdXis This version is incomplete, however.
I just rewatched/rescored this a month or so ago. I agree in part that this has largely been answered but would just point out that this was a 10 rounder (not a blowout) and Basilio would receive a 30 day suspension for coming in over the weight limit by 4.5 lbs. I don’t think the outcome would change, but not sure it gives a definitive answer. https://boxrec.com/media/index.php/Carmen_Basilio_vs._Gaspar_Ortega
Good point, certainly Carmen was a little bit over the hill and probably would have been sharper a few years earlier at 147, but then Ortega had been around for a while also.
I was also thinking it’s an Ortega fight, of course it’s a good one...maybe we can both be right lol!