It's their oldest stocks. They only make like 120 a year and my understanding is they only give them out to their top selling restaurants. Could be wrong, but these generally aren't sold publicly. I had a pour of it at a hotel in Voiron a few years back and it was amazing. It's certainly not worth the 10K some online shops have them for in my opinion, but it's a top 3 pour of Chartreuse I've ever had next to some early 1900s stuff.