LEGO is one of the most popular toys on the market, and fans flock to LEGO stores and LEGO.com regularly to browse and buy from the steady deluge of plastic bricks LEGO releases on a monthly basis.

Batman #11 (DC Comics, 1942). But let's start with that Joker cover. For decades, there's been some controversy about where Batman #11 falls in the pecking order of earliest Joker covers (because ...