You'll see that this question is regularly asked and that many would like to change the way "rarity" is assessed on Numista. And you soon discover that the index is unreliable, as this famous example will show you right away.
Many coins have an index of 100 (no Numista member reporting it ─ which doesn't mean they don't own it) and 97 (only one Numista member ─ I have many such coins or tokens, but they are not necessarily very valuable because of this).
Also, the more recently a coin was added, the higher its rarity index.
The rarest coin listed on Numista has to be the 1 tonne gold coin from Australia, because there was only 1 of them made...ironically at one stage there were 5 or 6 users claiming to own it, it still only has a Numista rarity rating of 97
I second basically everything Camerinvs said about the NRI. It should at least be renamed to "rarity amongst users", or even unique for each date line of a page. So many times a token worth next to nothing is being sold with tons of synonym adjectives for "rare" behind it online, all because of a misquoted NRI value.
But if you want to ask the same question but take out the NRI (which is the rarest coin (type) listed on Numista), it's probably one of those big gold coins as mentioned already, or some trial strike with a unique specimen known. I think some ancient/medieval coin types aren't even represented by a single known specimen today, but we only know they exist through records and stuff like that.
Yes, there are coins that do no longer exist but are known otherwise. It's also the case for banknotes, even rather recent ones which were high denominations, printed in very small runs, and destroyed when redeemed.
Until the 1930s (if I remember correctly) we didn't know that a "Domitianus" ruled very briefly somewhere in the western part of the Roman Empire, some time in the later 3rd century. We got to know it only because a coin was found with his portrait and legend ─ a coin unknown until then and which remained unique until about seven years ago, when a second specimen was found in the UK.
引用する: "neilithicman"The rarest coin listed on Numista has to be the 1 tonne gold coin from Australia, because there was only 1 of them made...ironically at one stage there were 5 or 6 users claiming to own it, it still only has a Numista rarity rating of 97
https://en.numista.com/catalogue/pieces26282.html
引用する: "numist007"Hello
A quick question, which coin do you guys consider to be the rarest on the Numista catalogue, as having the value of 99 or 100 on rarity index?
Thanks.
Numist007.
a coin can never have the rating 99, since if there's one owner the rating will be 97..
引用する: "neilithicman"The rarest coin listed on Numista has to be the 1 tonne gold coin from Australia, because there was only 1 of them made...ironically at one stage there were 5 or 6 users claiming to own it, it still only has a Numista rarity rating of 97
https://en.numista.com/catalogue/pieces26282.html
I agree with Neil- must be that Aussie gold coin-only one made-- I had a young guy wanting to trade with me and this was the only coin he had in his collection haha
