8x8 LED Matrix Pins

I have an LED matrix that, strangely, has 2 sets of 12 pins on opposite sides, so 24 pins total. How would I go about hooking this up?

strangely, has 2 sets of 12 pins on opposite sides, so 24 pins total

This is very probably a 8x8 bi-color LED matrix. It's got 8 rows, 8 columns of red LEDs and 8 columns of green LEDs, hence the 24 pins.

So probably something like this
http://led-display-manufacturers.com/china-Dot-Matrix-Display-8x8/products-NFM-12882ABx-4AF.html