Question re: Gosset 12 Ans

Just purchased a bottle. Reviews show a base year of 2006 and a disgorge date of December 2019. The bottle does not show any disgorgement but there is a code under the back label of “L5097112ANS”. Gosset’s website does not give enough information to identify the wine at least for me. It does show Mise en cave 2008. Is it possible that this is a base year of 2007, i.e. the second release of the 12 Ans?
Thanks if anyone has some info.