....are these two from the same photo shoot? Its the same ballpark, Wrigley Field. The angles match pretty closely. The sleeve length on the blue shirts match too. I'm going with yes, they're both from the same shoot.
Then I thought I'd keep going.
The '63 and '64 cards both show Billy in a road uniform. But the '63 picture is cropped pretty tightly, so there isn't much else to compare.
Then again. There is quite a lot to compare: