Swedish Army Model 39 Gas Mask Bag.
These bags are so rare now a days, they are WW2 era and usually dates in 1940's
The bag is made up from Canvas and full grain Grey Leather base
There is a shoulder strap 35mm wide and Leg/waist strap 25mm
Base 15cm diameter
from pocket 13cm x 12cm approx
Please remember that these are from 40's and will have marks etc