During WWII, Sweden thought Germany was going to invade, and went into high production on excellent quality military equipment. Much of it was recently sold as surplus. One of the best bits was gas mask bags made of heavy canvas with leather bottoms. I bought some online, but they were in such poor condition that I sent them back, and then there were no more to be found.

Recently, I saw them advertised again, and ordered three:

http://www.sportsmansguide.com/product/index/used-swedish-military-surplus-shoulder-bag?a=1715812

All three are in excellent condition. They only needed an application of leather conditioner. My daughter even wanted one for a purse. Presumably a new batch has been found in some warehouse and released to surplus.

My experience with military surplus is that you have to be quick when good stuff hits the market. Once it's gone, it's usually gone for good. I have a Swedish mess kit, canteen, axe and mittens, a German flecktarn parka and mittens, an Italian 2-liter canteen, a Polish bread bag and rain cape/tent and an Belgian wool sweater that all fall into that category - I now wish I had bought spares when I had the chance.

The gas mask bags I have are stamped with a single crown and "FKA". If my internet research is correct, that dates them to 1937-1940. How many modern nylon bags will still be going strong after three-quarters of a century?

Hey Rodent, How are you? the family? Been awhile

Knock on wood, everything is great.

pretty much the same here, Hurricaine Allie just turned 13 and is 5'10, I have 3 years 4 months to retire... and Jersey sucks

That link didn't work, is this the one?  Showing sold out if so.  

http://www.sportsmansguide.com/product/index/used-swedish-military-surplus-vintage-gas-mask-bag-gray-brown?a=680141

dang sold out

Here's the link, still shows in stock:

http://www.sportsmansguide.com/product/index/used-swedish-military-surplus-shoulder-bag?a=1715812

If that doesn't work, just go to their home page and type in Item # "WX2-580029", or even just "Swedish".

Ah ok, different product.  Your first link was jacked up somehow and went to a dead link for me.  That one works.  

http://www.sportsmansguide.com/product/index/used-swedish-military-surplus-shoulder-bag?a=1715812