1st Pattern Officers RLB Armband

A first pattern RLB (Reichsluftschutzbund/Air Raid Protection League) member’s armband; navy blue cotton/rayon armband with a white machine embroidered RLB insignia on the obverse; with “BeVo Barmen, Ges. Gesch.” embroidered in white lettering into the reverse beside the seam. For some reason, one edge has suffered quite badly and has frayed, why that is I have no idea, but the price reflects. !st pattern ones are notoriously difficult to get