Is this so rare that no-one's even heard of it.
My recollection is that the Speaker always selects the House of Commons single malt. Speaker Martin is tee-total and so selected a tasting panel to evaluate various whiskies. They chose a 10 year old Macallan. From memory, it came in a fairly recognisable Macallan white box. However, there was a bagpipe design on both the box and the bottle's label.
My local MP got me into the Commons to buy some, but its long drunk.