WW2 Fire Extinguisher

My latest charity shop find for resale at the antiques store is what I believe to be a WW2 fire extinguisher. Bought for £5, think it’s worth somewhere between £50-120. This one is a civilian Pyrene example. From what I’ve read Pyrene won a lot of contracts to supply this type of equipment to British Military around war time. If you find a military as opposed to a civilian one (usually green as opposed to brass) they are a lot more valuable.