jordanm - can you post a photo of your bottle? Need to know what type of closure is being used and there's a coat of arms at the top of the label- is there an indication of which Monarch? (does it mention Queen Elizabeth or By Appointment to His Majesty the King?) These are just some rough guides to give an idea. I know that later bottles of Dewar's had a date on the backside of the label as you're seeing - but I'm not able to figure out those specific numbers. Is this by chance a new bottle?