Interesting that the second warranty seal starts with 'DB'. Typically the REVISADO seals are 'XX' or 'XY'. Note that not all re-inspected boxes are marked REVISADO. I picked up a box in Havana last week dated '98 with warranty seal starting with 'D'. Normally a box this old would have a warranty seal WITHOUT serial numbers. It could be possible that they have run out of 'XX' and 'XY' serials and have leftover 'D' serials.