It's obviously not Tony Perez in that last picture.  Who wore #17 in '72?

He's a total fair weather Reds fan.  Well, maybe that's not doing it justice . . . he was 20 in 1970, and a big Reds fan like a lot of people.  But it's not his fault his 20s overlapped the 70s, so I'll have to give him that.  

I asked dad about the photo.  Here's what he had to say:

"It's NOT Tony Perez.  My first thought is Chico Cardenas.  He played a lot
of shortstop before Concepcion and they kept him as a utility infielder.  My
second choice would be Elio Chicon. Damnit, here I have getting ready for
some Who Dey action and now I'll be  thinking about this all day!"

And them he wrote back:

"It just came to me.....It's Julian Javier."