This Dumbarton 1965 45 year old expression of a single grain whisky is from the Clan Denny range of whiskies. It was matured in refill Hogshead number HH7001 and bottled at 49.5%abv.

Dumbarton Grain distillery was built by Hiram Walker in 1938 who also owned George Ballantine & Co. Built on the site of McMillan Shipyard on Castle Street, Dumbarton and was one of the largest distilleries in Scotland. It was also the site of the Inverleven Malt Whisky Distillery.

The Dumbarton distillery had a rather unusual security system, "The Scotch Watch". Formed in 1959 by Tom Scott and commanded by a gander called Mr Ballantine. Originally it consisted of five geese plus a gander. By 2001 the flock had grown to about 100 birds!

By 2002 Dumbarton had become outdated and difficult to modernise due to it's construction so the Distillery was closed and mothballed in 2002, and is now a housing estate.