1966 National Periodical Publications
"You see, Batman," explains the Cat Woman, "when one of my agents once knocked Robin unconscious, he copied a part of an important formula upon his vest in invisible ink. That is all I wanted to obtain. It was a fitting revenge to use one of you to accomplish my ends. Now I must escape," she says as she releases a large cat in the tunnel between her and her foe.
#10 of 11 Batman vs the Catwoman cards.
Collect the entire series of 55 Batman cards