The Glenfarclas website makes no mention of this edition of the 105, the extract below was taken from Royal Mile Whiskies

Glenfarclas 105 20 Year Old

The original 105, so named for the British Proof alcohol strength of the whisky, was a very highly rated 10 year old that encompassed the full profile of Glenfarclas. This bottling, with a further 10 years aging, has amped up the spices and dried fruit notes as well as highlighting a sweet demerara sugar and chocolate depth. A great whisky with great, warming length.