for you, this MK2 helmet of National Fire Service:
liner J.C.S.& W. Ltd (J.Compton Sons e Well Ltd of London)-1939
Size 6 -3/4
The owner's name e serial number are written inside.
The markings of the shell are covered with very dense paint and not visible to me.
The Fire Force 32 was based in Woking during the WW2.
Hope you enjoy it and really appreciate your comments.