1771 1 Skilling... how do you tell the difference?

I've got a couple of these (I owe photos, will get those down the road) but can't tell the difference between the one minted in Denmark and the one minted in Norway. I assume that the rosette should be the discriminator, but mine are so worn I couldn't tell if there was ever a dot in the center... Can anyone shed any expertise here?

https://en.numista.com/catalogue/pieces81301.html

https://en.numista.com/catalogue/pieces958.html

 

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The crowns are actually quite different.

 

http://1771skilling.com/

 

I was surprised as well. That site is absolutely amazing for these coins, even if it's a little slow to navigate/load pages.

 

Wow! Okay, I'll try to photograph the couple I have tonight and see if we can't figure this out.

 

Okay, first coin, multiple shots. I left it in the 2x2 because I haven't found my stapler since moving.

 

Second coin, multiple shots.

 

Okay, my guesses are:
1st coin: http://1771skilling.com/home/copenhagen/Coph Type 5/C563/
2nd coin: http://1771skilling.com/home/altona/altona type 5/A531/

 

Third coin and my guess: http://1771skilling.com/home/altona/altona type 7/A739/