If you can read the small print on that card back you can see that the puzzle was formed with six cards. The villains were all six-piece puzzles while out heroes got bigger, 10 piece puzzles.
Here are a few more of my favorite cards from the set. Hard to beat mixing in the Statue of Liberty!
Why would a ghost wear glasses, other than to better visualize him in a cartoon?
And here is a look at the Joker puzzle when it's put together:
The blue bat set was the third of these cartoon art sets of 1966. It's also the weakest in terms of artwork. But no Batman art is bad Batman art. It was numbered as 1B thru 44B.
Again with the puzzle backs.
Robin gets to work his arm again in this set.
They are called the blue cowl backs and I much prefer them to the puzzles. I picked up a couple of these cowl backs on COMC just as 'type cards' and I'm fighting the urge to chase the whole thing.
The two different back from the #9B card, side-by-side:
I mentioned that Topps had six Batman issues in 1966. Here are cards (not mine) from the other two. These used photos from the TV show and the movie. The Batman Laffs set had TV pics...
The Batman/Riddler set was based on the movie.
The three cartoon-style sets, black, red and blue, were re-issued in 1989 as a 'deluxe' set of 143 cards. I was unaware of that until recently and mine is now in route. I really haven't given much consideration to the two 'photo front' sets. I was a Batman comic guy and the show, while entertaining, wasn't something I really went out of my way to watch after the novelty wore off.
That doesn't mean those two sets don't appeal to my 'completist' side.