$ Ancient Mysterious Coin of Legend $

Hmmmm.....I found a coin a few years ago, in the parking lot of a store that i use to work at. It was stuck in the concrete and every day it would slowly lift up, until one day i decided to pull it out. Its a 1936 British Half Penny with George V's head on it. IDK if its worth anything, but ive read on wikipedia that there are less than 10 of them in the entire world. If thats the case, then im sitting on a gold mine. Personally, i dont really value money as much as more important things in life. Ya cant buy happiness with money. -.- I've kept the coin for almost 4 years now since i found it, and now im thinking about using it to make money; however, i have no idea how much its really worth. If anyone knows plz tell me. I'd really appreciate it and who knows? Maybe i could split half of wut its worth with whoever I want. It could be you....