Dating a Coat

[LordBelacqua]

So I've recently picked up a vintage Nor-Wind coat - but I can't find much information about the company or when it operated. It's made of genuine Crombie cloth, and was made in Norway - but that's about it. Any of you fine gentlemen have any ideas?

http://www.flickr.com/photos/57986319@N06/5330325573/
http://www.flickr.com/photos/57986319@N06/5330932028/
http://www.flickr.com/photos/57986319@N06/5330932028/

Edit: I've managed to find out that the company went out of business "3 or 4 decades ago", but nothing more.