Hi,
I just want to be clear on this topic. Some auction sites also have a normal online shop outside their auctions.
In this list of sources numista can use, there is a link to the websites. Some coin shops have the same URL as the auction sites, but some do not. For example "Teutoburger Münzauktion" which is on the list, has the URL https://www.teutoburger-muenzauktion.de/de/
while the coin shop has the URL https://teutoburgermuenze.com/
I looked into the Impressum of both and (to no surprise) the address is the same.
So I assume that we can use coins from the coin shop too, even tho it's not explicitly on the list.
I bet there are other sites with the same thing. Do we have to look in the Impressum every time to make sure? Maybe they can be added to that list too?
Best,
Trooper