Multi-coloured N.S.D.A.P.-related arm-shield (or: armband-device) showing the coat of arms of the town of München (ie. 'Hauptstadt der Bewegung')

The attractive - and only once before by me encountered and with certainty rarely found! - multi-coloured and/or typical shield-shaped badge (ie. arm-badge or possibly armband-device) that measures approximately 8 x 7 cms. - is nicely constructed from (regular-styled- and fine-structured) linnen and was woven in the neat 'BeVo'-weave pattern and (is I deem 'off-factory'-mounted onto a piece of black-coloured wool. It shows a golden-yellow-coloured eagle-device with below that the coat of arms of the town of München (ie. 'Hauptstadt der Bewegung') as woven on a silverish-white-coloured background. The piece was (I deem) clearly used ie. once tunic- ie. armband attached but is void of any damage: it just shows some moderate staining (as can be seen on the pictures). I am convinced that this is a very rarely encountered N.S.D.A.P.- (ie. party-)related item that did not saw wide-spread usage: only the second such neat multi-coloured and shield-shaped arm-badge I did ever encounter!