National Distillers expressions are some of the most highly sought after by all vintage whiskey enthusiasts.  Old Grand Dad was one of their most popular brands and remains one of the most highly regarded “dusty” expressions.  This particular bottle is a an export as seen by the size of .7 liter distinction and the export sticker on the back and bottled at 86pf.  Based off the logo of “old grand dad” as well as the metal security cap, this bottle is dated to the 1960s.