I picked up a few bikes out of a thrift store here and one of them is a DBS. I did a bit of research online, but found only a bit of information of this bike. Built in Norway. The Head badge says "DBS" with OGLAEND.

The serial Number is also stamped on the head tube, last 2 are 66.

Components: Ridigda Wheels, Allvit Rear Derailleur, Weinmann Brake set. Down tube shifters.

True 10 speed 5x2
Very strange Front chain rings. Big is 50 Tooth small is 48 Tooth. 1 Piece cranket.

Anyone got some additional information such as a possible code of the serial for a date stamp?

With the components, I’d taking a 'guess' saying its very early 70's??? Don't really know.
If I remember correctly the Rear Derailleur (ALLVIT was only produced from 65ish to early 70's) thus giving me a point to work with.


Thanks for any info anyone may have.