Dom Pérignon Réserve de L’Abbaye (also known as Dom Pérignon Gold, or simply Gold Reserve). This is a stand-alone series of vintage releases for the Japanese market only (also available through Hong Kong fine wine merchant Ginsberg + Chan), and a product that you rarely hear about in the UK/Europe unless you go hunting for information. Consequently, very little is written about it and, where it is talked about, it invariably isn’t written in English.
As alluded to with the use of the term ‘Gold’ (itself based on the fact that the labels and covering foil on the bottle are coloured gold), this brand offshoot is intended as an ultra-deluxe product that has seen extended cellar ageing, and is only available in limited quantities. The vintages are released at circa 20 years of age which puts them on a vague par with the P3 releases (Plenitude, formerly Oenothéque), but I say vague as the 1990 RDLA was released in 2009 whereas the 1990 P3 has only recently hit the shelves. There is also a passing resemblance between the two products as the 1990 P3 also has a gold style label.
Other packaging difference to note on the RDLA is that it has its own distinct capsule atop the cork, the back labels are all in Japanese and, more interestingly, that they also include a ‘Limited Edition’ serial number. Dom Pérignon are well known to be evasive on the subject of how many bottles they produce each year but, do these serial numbers give us some hint towards production runs? As you can see from the below image, the back label for the 1992 is only 5 characters long, ergo a top limit of 100k bottles, however the back label for the 1988 is 6 characters long taking us up to a potential 1 million bottles.