And this may be an addendum to the 71 Topps variant checklists already mentioned in Beckett.
Card 619 can be found with and without copyright info, per Beckett. There is also a discrepancy with the batter on the front. The "with copyright" version has black shading on the rear of the red helmet, while the "without copyright" feature no shading on rear.
Also, card 123. This card can be found with the card number centered, or to the right. But the batter also has a discrepancy. The "centered" version features black shading on the rear of the helmet. The "right" version features white shading rear of the helmet.
Card 619 can be found with and without copyright info, per Beckett. There is also a discrepancy with the batter on the front. The "with copyright" version has black shading on the rear of the red helmet, while the "without copyright" feature no shading on rear.
Also, card 123. This card can be found with the card number centered, or to the right. But the batter also has a discrepancy. The "centered" version features black shading on the rear of the helmet. The "right" version features white shading rear of the helmet.