Madeira - Breweries

The Madeira Brewery (Empresa de Cervejas da Madeira or E.C.M) is a brewery on the Island of Madeira (a Portuguese archipelago situated in the North Atlantic, southwest of Portugal.)
Some of the Brewery's Range
Coral Branca Lager - Introduced in 1969
Coral Tónica Stout - Introduced in 1969
Coral Sem Álcool Branca Non-alcoholic Lager - Introduced in 2003
Coral Sem Álcool Tónica Non-alcoholic Stout - Introduced in 2003

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.