NSBO (National Sozialistische Betriebszellen-Organisation) Sleeve Diamond (NSBO Ärmelraute). The NSBO was a workers organization in Germany, established in 1928. In 1935 the NSBO was merged into the DAF, a more organized and better represented organisation. The sleeve diamond is machine woven in silver/grey linnen on a black background. There is a tan buckram backing. These sleeve diamonds were worn on the early brownshirts. Nice example in very good condition!