Well, assuming the Danish 210 uses the same parts as a SIG 210 (a big assumption, and one that I am unsure is even true), then Numrich Arms seems to have the slide stop in stock (part #41 at the link below), but make sure you are sitting down when you see the price.
Numrich Gun Parts Corp. - The World's Largest Supplier of Firearms Parts and Accessories
They are out of the recoil spring assemblies (part #13), and I cannot believe that is the case, based on the price they last charged for them. Wow.
I don't even want to talk about the magazines. This, from a guy who once paid $100 for a hi-cap pistol mag during the Assault Weapons Ban, too.
Allow me to suggest that you sell the parts of your pistol individually, and buy something really nice for yourself when you get done.
Good luck with your rebuild. Please accept my thanks for the education you arranged for me to receive while researching this info.
I had absolutely no idea .... none whatsoever...
Just ... wow.
"Placement is power" -- seen in an article by Stephen A. Camp
(RIP, Mr. Camp; you will be remembered, and missed)