PARIS: 10 years since RARE CASK 42.6, LOUIS XIII is honoured to unveil RARE CASK 42.1 – a true wonder of Time and Nature, offering an ultimate expression of LOUIS XIII Cognac. Available in a limited number of just over 775 unique black crystal decanters, RARE CASK 42.1 is a gateway into the wonders of the world, embracing the realms of the unknown and the unfamiliar in the quest for the extraordinary.