Hey guys, I was browsing the FAQ section earlier and discovered that in the Numista Catalogue section the link provided for users to report duplicate items doesn't work anymore.
It tells you to use the https://en.numista.com/forum/topic96754.html thread to report duplicate items, but when you click on that it just sends you to the forum menu instead. I'm not sure if a new thread has been made for this or if the old one is still up somewhere since I don't use the forum often, but I figured there should at least be a working link there. Hope this helps!