Mystery german helmet, ww2 or post-war???

[Flying10uk]

Attachment 68279Attachment 68280Attachment 68278Attachment 68277
I recently purchased this helmet which was sold to me as a WW2 shell refurbished, post war, with a new liner for use by the fire/ambulance service. The air vents are a series of holes on a P.C.D. rather than a single hole on a dimple as on other WW2 examples and the edge to the rim is turned over. There is no raised rim to the centre but there is a reflective white tape around it. It is apparently dimensionally the same as a WW2 example but perhaps a fraction lighter by a small margin. The vendor did not know if it was used in East or West Germany but he stated that they stopped using them as there was a risk of the wearer receiving an electric shock to the head via the metal helmet.

Could some-one please confirm or correct the above and advise of any further information on this item. I apologise for not being able to figure out how to spin the first 2 pictures round 90 degrees. I would be very grateful for any information,please.

Information

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[Sarge]

From your photos it is a bit difficult to tell, but it is a factory made fire helmet missing the neck shield leather. From the strap I'd guess post war, but ???
Sarge

[browningautorifle]

Isn't that a post war fire fighters helmet?