I know there has been discussion and some of the 1961 "green in baseball" cards are officially recognized - please forgive me if this one is already known! Joe Amalfitano

1961 Topps #82 Joe Christopher - red pixel next to face. I'm fairly convinced that pretty much every card in the first series of the 61 set has a variant with a single red pixel on it somewhere

1961 Topps Bob Bruce with the single red pixel that Topps apparently added as a "Where's Waldo?" type game to the first series.

1961 Topps #86 - two white slash marks above the "A" in "Angeles", and with yellow ink in the white team letters, misaligned presumably from the colors layered to create the red.

61 Topps #277 Hank Foiles - with and without yellow square in corner of team name box

No, congratulations, that's a new one to the list.

I took another look through my dupes, and it looks like my other Amalfitano has a slightly different green-in-card-number-ball, with a lighter green ink that doesn't advance as high into the baseball. I need to go pick up a regular copy now, which seems to be more common looking at comc and eBay

#161 Sherman Jones - unmissable yellow dot in the team name box. This card is frequently found with small yellow fisheye print dots that plague every vintage Topps card in a hundred different ways; but it can on occasion be found with a full variant dot like this.

1961 Topps #386 Joe Hicks
Bottom - no dots
2nd from bottom - red dot in bottom right corner
Top - blue dot and red dot in bottom frame

The top card shows exactly what these are, registration problems.

On the top one you can see the green under the black, and it's almost up to the lettering at the right.
On the other, black is printed higher in relation to the green, so the arc where the green is relieved to make room for the number area isn't as visible.

They should happen on all cards in the same series, if not the entire set.

Ones where the green isn't a smooth arc are something else.