A good original ARP wardens helmet, has W to front and rear of the helmet, no visible date to the shell. The shell is magnetic and displays two drill holes to indicate lower quality steel used in production. The liner is a rarer version with a fibre type skull cap lining, rather than the cruciform shape. And is held in place by the regular cruciform pad with nut and bolt. Complete with original chinstrap. These home front helmets have become more and more desirable in the last few years and are getting difficult to find.