From my son Alex's box. One a year, every year on or around his birthday (2/18).
This is the last from the first row - #13. (He just turned 12, but I had one at his birth, which accounts for the difference)
The box code on these is NOV 09. With 13 years of age, these have really developed some unreal flavors. Even the prelight was insane. Raisins, spice, brown butter... Sublime.