The decal "otto-bikes.de" is misleading. "OTTO" is in fact one of Germany's largest online retailers (formerly a classic catalogue merchant). They must have bought the domain at some point because of the name reference.
The domain "otto-bikes.de" used to belong to a bike shop in Berlin owned by Werner Otto a former East German track cyclist (Olympic silver 1972 in Munich on a tandem!). This same Werner Otto now owns another bike shop in Berlin called "Velo Sport Werner Otto GmbH" but doing business online under the trade name "Premium Bikeshop" (www.premium-bikeshop.de). Maybe its worth contacting them to find out more about the bike's history.
Cheers,
Andy
The domain "otto-bikes.de" used to belong to a bike shop in Berlin owned by Werner Otto a former East German track cyclist (Olympic silver 1972 in Munich on a tandem!). This same Werner Otto now owns another bike shop in Berlin called "Velo Sport Werner Otto GmbH" but doing business online under the trade name "Premium Bikeshop" (www.premium-bikeshop.de). Maybe its worth contacting them to find out more about the bike's history.
Cheers,
Andy