Belgium - Breweries

Rochefort Brewery (Brasserie de Rochefort) is a Belgian brewery which produces three beers designated as Trappist beers. The brewery is associated with the Rochefort Abbey, which originated in the thirteenth century; monks have been brewing beer at Rochefort since the sixteenth century, providing much of the income for the monastery.
As with all Trappist breweries, Trappist beer is brewed within the walls of a Trappist monastery, under the control and responsibility of the community of monks, who are involved through the process of making and marketing the beer. The beer is sold only for financial support of the monastery and good causes. The majority of the profit from the sale of the beer is distributed to charities and for community development around the region.
Some of the Brewery's Range
Rochefort 6 - Named after its original gravity measured in "Belgian degrees" (a brewing scale no longer used today) It was first sold to the public in 1953.
Rochefort 8 - Originally called "Special" Rochefort 8 dates to the mid-1950s. The name comes from the original gravity in "Belgian degrees."
Rochefort 10 -This was developed in the late 1940s and early 50s. It appears on virtually every list of the world's finest beers.

Over the years the brand identity is updated and re-launched with subtle changes, a change of Logo or a new font.
Sometimes this brand update is done by the new owners after a brewery has been sold, other times just to give the brand a fresh new look on the ever growing market.

Below are some notes to help identify some of these changes and an aid to reference the year of the glass.