Hi. Trying to find if a 71 year old, unopened, bottle of Guiness Extra Stout has any value? Do people collect such thing? Based on my research, it was bottled in Liverpool, in 1947, by A. McAffee, based upon the L 47 on the label which also contains the “ ‘s “ that was dropped in 1953. The label has missing pieces, however all critical information remains. Any information, suggestions much appreciated. Thank you.