A Brief History of the Marque
1923-1925 (or 1927) Berlin-Burger-Eisenwerk AG, Berlin
The Berlin-Burger-Eisenwerk AG was a very small company that entered the market with a 117 cc model 1924 and did not have much chance of survival due to the inflation which preceded the 1929 economic crash. It was one of many motorcycle experiments of the 20s that carried the brand name BE-BE.
Both Henshaw and GTU mention 1927 as the date the company folded.
Sources: GTU Oldtimerservice, Henshaw