Are these chairs new productions?  

cord looks vintage, to be...
cord looks too vintage, to be new reproductions, no?
I know there was some interest in Japan for Danish, scandinavian design as it obviously shows resemblance to japanese craftmanship.
I think skagerak has nothing to do with this, these are nice danish influenced chairs, produced in japan, with skill.
somebody actually devalued the chairs (in my eyes) by putting a stupid plate on them and erasing the real valuable history of the chairs.
I blame the seller for this, who obviously doesn't know what he or she is doing.

The Danish cord I've seen...
The Danish cord I've seen that was broken like this was much darker in color, as in much older, I think. Maybe this chair has seen a lot of use or maybe the cord isn't as good as Danish cord. I dunno. Isn't the Japanese interest in Danish Modern fairly recent? Or were they making furniture in that style 30-40 years ago? I really don't know.
It may not be worth paying someone to redo the seats if you're going to sell them, but it's not that hard to do yourself if you're handy at all. See the giant, humongous thread on that subject in this forum.
http://www.designaddict.com/design_addict/forums/index.cfm/fuseaction/th...

On second thought...
...the broken cords may have more to do with the design of the chair. The weft cords at the front edge of the seat frame raise the warp cords up, which leaves them vulnerable to greater wear.
This is very different from the way Danish seats are constructed and woven.

Thanks for the reply!
Yeah I am waiting on the Cord to arrive so I can begin doing these. I love working on stuff like this. My next question is how do I get rid of the sharpie on these? Anything that is safe on wood?

Nails
The cord is snapping at the point where these seem to have been nailed onto the chair from the top point, I can post a picture of it later. It is very different from a set of Poul Volther chairs I own that I re-did.

follow the link and you'll...
follow the link and you'll find similar (japanese-danish)
http://www.designaddict.com/design_addict/forums/index.cfm/fuseaction/th...

That
chair in the link has a similar back support to some japanese chairs I own with a label that reads Asahi Furniture. Thanks for the link.

Could it be that the metal tags are original?
If I were going to affix them as part of an attempt to deceive, I'd simply place them over the mark that's been so clumsily and obviously obscured.
I'm guessing Danish design/Japanese manufacture.

1 metal tag
Only one chair has a metal tag. I'm gonna assume that it would be present on all 4 chairs if they were Danish. Still I paid next to nothing for them and will still fix them and probably use them to supplement the dining room for large gatherings.