Thank you very much, Battlestamps.
This is a great step forward with my german stamp knowledge. I have read some of the wikibooks in the link and found "A3. Bafra, Francotyp (MV), June 1923." which seems be the same, but mine is missing the company name etc.
There is two other details which may be interesting:
1. The number 40000
2. Most of the francotyp is send from Berlin, but here it is Bremen
Some more about francotyp her:
https://www.postautomation.de/freim...talogstudie/Dear I ask for approximately value?
From the International Postage Meter Stamp Catalog/Germany, Part 1
