JW 1820 was a special commerative blend created specifically for the Asian Market(more specifically Japan) and as a premium blend at the request of the APAC sales director. It is targeted at those drinkers who want to give their friends something special that they have probably never had. It is a 21 year old blend so Gold Blend plus but now quite with the sweetness of GB, more musky. As far as I am aware it was also a one off production run so it should be becoming more difficult(if not impossible) to get now. It was also produced only in a decanter so there are no "bottles" of 1820 available.