I got this mask 6 months ago and it still gives gray hair..I have look in all my book about german gear but nothing comes up about it.
The best tip is that it is a mask for the driver of a Panzerflammwerfer " the halftrack models"…I had guys look ar the webbing and they say it´s a special fabric with asbest in it aigenst the heat..
The markings and the strabs on it is the same as in a standard gasmask.

Please help me with this…
All the best from Denmark
Regards Morten