Thursday, June 4, 1964 looks right. You've got that score on a Yankees/Twins game. You don't have a Baltimore/KC game, but that would have been the 4th game of that series, and there was a double header later in the season, and Koufax was on the hill in Philly, throwing the third no-hitter of his career.
A quick cross-reference with gettyimages...
Los Angeles Dodgers Sandy Koufax mound during game vs Philadelphia Phillies at Connie Mack Stadium. View of scoreboard. Koufax pitches third no-hitter of his career. Walter Iooss Jr. F32 )
That would have been a lot easier if they'd just used the entire photo.
And it took about 10 minutes to work out the source.
And as a Mets fan, that's about as complimentary as I'll get to a Yankees card.
this one another one that could have been cropped a little wider.
But that is such a minor complaint for a set that offers so many great chase cards among the base. There are about a half dozen more that I'd like to add, but those can come whenever, as they sit on the outside of my most wanted list.
When I pull the trigger on those, they'll probably get a post of their own as well.