In 2003 I drew some svg-pictures and donated them to the sodipodi-clipart-library. I was surprised and somewhat proud hat after some time these images were used on Wikipedia. (See Ostfriesland). You are encouraged to use them. The flag is now also available in the openclipartlibrary.
These Coat of Arms belong to the region of East-Frisia, the land of my ancestors.
This is the second version. I noticed some minor errors in the drawing in the previous version like shown below: These are corrected in the new version. This flag already contains the changes of the Coat of Arms.
Kamon and other japanese symbols
More information about kamon: