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Pour ceux que ça intéresse de savoir, c'est une dudule anglaise "Premier".

Premier
The Premier is a British-made lamp that also has a shaky history. Some of the earliest of the production line are considered some of the better lamps seen underground. However, during the 1970's the lamp's features underwent a change for the worse. The manufacturer favored economy over quality, and the Premier became less reliable. Leaks are common among some of the late Premiers. Flimsy and inefficient reflectors made of aluminum replaced quality reflectors (however useful they may be to surveyors). Also, brass was replaced by brass coating. Some of the Premiers produced in the late 1970's and early 1980's have been known to have a pulsing flame for the first few minutes of operation. Though many Premier lamps are of high quality, it is advisable to check the lamp thoroughly before buying it.