British Army Royal Armoured Corps Crash Helmet 1st Pattern Early WW2

Description

An original and scarce early war First Pattern British Royal Tank Regiment (RTR) and Royal Armoured Corps (RAC) Crash Helmet  worn by British tanker / armoured vehicle crews. Marker label intact, dated 1941
Complete with its leather headset bracket which is often missing on surviving examples
It appears unissued,  some storage mark
size marked 6 & 7/8
Postage（tracked & signed for）
Australia, China, South Pacific:
Rest of the world：