I have happened across a few bottles of Makers Mark. These bottles state on the label "International by Maker's Mark". They have a Black Wax seal rather than the classic Red. On the bottle on the bottle, it has the numbers "64" on the left and "71" on the right. I'm assuming these are from 1971 - they are really old. I've searched the Internet but can't find anything on these. Is there anyone out there that can give me some information on these bottles? I can send pictures as well.