Mackie's Ancient Brand Blended Scotch Whisky (Bottled 1940s) (75cl, 40%)

This is Mackie's Ancient Brand, a Scotch whisky bottled in the 1940s by White Horse Distilleries Limited. It comes from Malt Mill, an Islay distillery that was dismantled in 1962, and is in a 75cl bottle at 40% ABV. Opinion is divided on whether it is a single malt or a blend. The label names Malt Mill Distillery and says the whisky was distilled and bottled in Scotland, but it does not say blended anywhere.