Middlesex WW1 Helmet help

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Hi all
I'd be greatfull for any help or advice on this item 292074366138 as you see it's Middlesex related so I'm interested in buying it but would appreciate some one to help confirm its ok and guniune, I have researched and to my eye looks ok but having never collected this type of helmet or even seen one in the hand help is required .What are your thoughts on the price ? does seem on the high side to me, having had a look around its high end but then I've not seen one with strap and liner and decal before so may be right ? Any thoughts or help I'd appreciate

Thanks

Gerard