Ern North Star?

Morning, chaps,

I got this off eBay. Apart from the fact that the blade had rust on the edge (and would not take one, either), I was wondering if this is really an Ern. The seller, a very nice lady, asked me to ask you what it is.

Thank you for any pointers in advance for guesstimates of its age, too.
http://tohserver.com/%7Erobin/SRP/gallery/Ern.JPG
http://tohserver.com/%7Erobin/SRP/gallery/Ern2.JPG

Some time later...

Many thanks to fenriswolf for his link to http://www.gut-rasiert.de/forum/inde...pic,591.0.html.

Do we have any Russian speakers here? I just found a sister forum: http://www.britva.ru/forum/viewtopic.php?t=162