Glenury Royal 1966 Cadenhead's 24 Year Old 

The Authentic Collection was launched by Wm. Cadenhead in 1991, and included whiskies from several rare closed Scottish and Irish distilleries, bottled for the company's 150th anniversary. It would later go on to become a mainstay of their portfolio, as the cask strength alternative to the Original Collection, which replaced their famous "dumpy" bottlings in the early 1990s. The Authentic Collection is now the flagship Cadenhead brand, and one of the most recognisable independent labels on the market.

This 24 year old Glenury Royal is one of a handful of bottlings which actually predate the original 150th anniversary releases.

Glenury Royal is so-called due to its earliest proprietor, Captain James Barclay, being a close friend of King William IV. The distillery is one of many picked up by DCL (now Diageo) during an era of optimism in the mid-20th century, before being closed down in the early 1980s after a market downturn created an oversupply. Indeed, Glenury closed in 1985 and subsequently demolished. As such, official bottlings are rare, especially those under the Downie and Garron brand names. Bottlings from independent labels like this are increasingly so as well.