Germany - Breweries

Duckstein beer has been brewed in Königslutter am Elm, Germany since the 17th century. It is now part of the Carlsberg Group.
Some of the Brewery's Range
Duckstein Rotblondes Oberbräu -
Duckstein Opal Pilsener Grand Cru -

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.