Dad used to work for Banco Popular de Puerto Rico, and for some reason ended up in one of their commercials for their bank.
I remember seeing this on film (like on a reel to reel) when I was little. Thanks to the wonders of technology and YouTube, it clicked in my head today to search for it, and I found it again.
Now, he's not a main singer, so I clipped some pictures. He's only at the beginning and only for like 4 seconds.
And in all it's 1970's glory....the video!