Debolestis
Ma9nWaRr10
Soviet sets have the same “problem”.
https://en.numista.com/forum/topic166197.html
Hungarian foiled sets also have such problem, but to a lesser extent.
Regarding your question, I view them as variations of the same set, because the packaging is not drastically different (for example softcover-hardcover would be a very different packaging) and the contents are the same. Having “yearlines” (or rather typelines) would be a great solution. But for now, since we don't those, I just mark such variations in the comments:
https://en.numista.com/catalogue/set.php?id=2486
Thank you for the links. I understand what you are saying. It would be nice to have “typelines” for swapping. I am collecting sets and this would be useful to me.
What about first example where there is same set with certificates in different languages?
What about second example with same sets in different colours?
Imho, the CoA, description, etc being in different different languages is no ground to separate the sets, as long as the information is the same. It should just be marked in comments. (https://en.numista.com/catalogue/set.php?id=809)
Different color is a more difficult question. If “typelines” are introduced I think they should definitely be considered as one set, just two variations of it. But how to treat them now I am not sure.
As you can see I am not a fan of separating sets over small changes. Essentially, I believe, the separation should happen in these situations:
1) Year. (Obviously. Different year - different set.)
2) INTENTIONAL change of content. (I don't think that a coin missing from 0.5% of sets due to poor quality control is a ground to consider it a different set. Similar to how error coins are not allowed on Numista. Same for different coin placements, and other errors)
3) Significant intentional changes of the design.
Like here:
https://en.numista.com/catalogue/set.php?id=783
https://en.numista.com/catalogue/set.php?id=779
Or if the sets were issued to commemorate different events: (grouped with design change because it happens here)
https://forintportal.hu/forgalmisorok/disztokos-forgalmi-sor-2023_bu_budapest-150-eves.php#ugrik
https://forintportal.hu/forgalmisorok/disztokos-forgalmi-sor-2023_bu_lamfalussy-lectures-conference.php#ugrik
And as I previously mentioned just change of color is not significant enough (at least for me).
I hold the same views about coins too. I am advocating to stop separation of coin types based on small changes, like different edge and orientation.
But it was just my humble opinion.