How old is this bicycle?

K

Ksenia

Retro Newbie
Hello,
How old is this bicycle?

There are following marks.
On brake lever: Torpedo Schweinfurt, circle sign, U (above) W (below), Sachs S (logo)
On hub shell: S Sachs (logo) Torpedo Schweinfurt 2.8 (above) 36 (below)
On seat mast: (three crowns) 9 (triangle) 83366M

PICT4125_zps0a0b3df1.jpg

PICT4127_zps9f1c23d1.jpg

PICT4132_zps4c352496.jpg

PICT4133_zpsd6163188.jpg

PICT4133_zps45a2b761.jpg

PICT4121_zpsc88fe703.jpg

PICT4115_zps5f8a9a52.jpg

PICT4123_zps30b6a91e.jpg

PICT4115_zpsbef1d372.jpg

PICT4123_zpsf30c394d.jpg

PICT4124_zpse595e1fe.jpg
 
GasPipeWarrior":no1shrdt said:
The rear hub is probably the best place to start in working out the age of your bike. Somewhere to start:

The Fichtel & Sachs Torpedo Duomatic internal gear hub Story

How to date a hub.
Click to expand...

Thanks for the answer!
According to http://www.torpedo-coasterbrake.com/hub-date.htm “On hubs made from 1975 to 1989, you will find 2 letters on the brake lever. The one above is for the month.”

On my brake lever the letter above (for the month) is U. How to translate it to a certain month, since U is the 21st letter (or 19th excluding J and Q)?
 
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