I have a bottle of friar john cor quincentenary scotch whiskey,limited edition number 56,it was distilled in 1994 to celebrate 500 years of scotch whiskey.Number 1 was given to the queen,number 2 was given to margaret thatcher,number 10 to john major and number 11 to kenneth clarke.It is boxed and unopened,how much could it be worth?
Thank you

