Web site . My Coins . Suggestion

Hello !
This is the best site about numismatics !
I think it was fine to have in the section " my collection " an option by which to sort the list of coins according to Numista index rarity !
In that way we could have an evidence about the quality of our collection !
Have a good day !

Good idea!

Sorry, but I disagree.
Due to the fact that some Numista members do not have some/all of their coins listed on the site, a false indication of rarity will be shown, rather than the truer indication of mintage, which again could give false indication, due the the fact that no one knows how many of a particular coins still exists.
I have coins listed on Numista with a rarity value of 97, yet, 20,000 were minted. Does this then make it extremely rare?

Cita: "COINMAN1"​Sorry, but I disagree.
​Due to the fact that some Numista members do not have some/all of their coins listed on the site, a false indication of rarity will be shown, rather than the truer indication of mintage, which again could give false indication, due the the fact that no one knows how many of a particular coins still exists.
​I have coins listed on Numista with a rarity value of 97, yet, 20,000 were minted. Does this then make it extremely rare?

Would be a good idea, but you're right.
I haven't all my collection on Numista either,
great thought though.​

Good point, but then again, it is a Numista rarity index...

"NRI" doesnot mean anything else besides rarity only inside this community.

Mintage is a terrible indicator of rarity at best.

If nothing else, quite a few types had most of their official mintage remelted, leaving them a lot rarer than they would otherwise have been. And for many other types (both old and recent) we don't know the mintage at all.

Even aside from that... look at this Armenian commemorative, for example. Its mintage is only 60,000 - which under most circumstances would be extremely low (especially for a circulating type, which this one technically is). However, those coins are actually fairly common, and everyone who wants one can usually get one fairly easily - and the type's relatively low NRI of 22 reflects that.

Now, I admit that the NRI is hardly a perfect indicator either - for one, the Numista community is heavily skewed towards French and English speaking countries, so, e.g., older Russian coins are often underrepresented. It does give a much fairer figure of which coins are actually hard to get, however.

Hi,

no way..... it's only concerning the type, and only how many coins of this type have been entered by the numista members!

It doesn't give you anything but a false impression of having something, which out in the real world is nothing!

No, no and no. That indicator is just pure rubbish.

Example: Only two people have entered, that they have a given type. The type consists of 2 years. The first year was minted in 1.000.000 and the second year minted in 100.000 coins. The rarity index let's say would be 87.5 for the type. For the person having entered the first year it would be what, 87.5? For the person having entered the coin in the second year it ought to be TEN times higher. So the second person should/would have a coin with a rarity indicator of 875?

If you cannot laugh at this incredible stupidity shown by that indicator, then use the indicator, but it's not serious at all!

Ole

Hi,

just for fun I did a test on a coin, where nobody has entered anything, so rarity index 100:

Very well, then I entered that I have 1 coin and the index went to 97

so just to hammer it in I said that I have a 100 of the second line coin and the index did NOT change, still 97!

If that's not illogical, I don't know, what would it would be considered? Just stupid?

So in the end I couldn't even make my point, I set out to make!

Sorry folks, but forget that indicator!

Ole

Cita: "Sjoelund"​Hi,
​
​just for fun I did a test on a coin, where nobody has entered anything, so rarity index 100:
​​

Did the exact thing myself!
The numista rarity index is a fun indicator but not to be used for trading.
It would be better if it listed how many people own the coin.

Cita: "Numismatist uk"​

Cita: "Sjoelund"​Hi,
​​
​​just for fun I did a test on a coin, where nobody has entered anything, so rarity index 100:
​​​
​
​
​
​

​
​Did the exact thing myself!
​The numista rarity index is a fun indicator but not to be used for trading.
​It would be better if it listed how many people own the coin.

​and how many they own, but still that doesn't change anything. That index is just RUBBISH.

Ole

I have seen numerous threads here now where people have literally hammered the Numista rarity index...I agree that it is not to be used to determine the coin's value...however I do not agree with declaring it "totally rubbish, stupid or useless"...when swapping coins and the negotiation it is down to a few coins where I have to decide which ones I rather want to have, I actually have a look at the NRI quite often....simply to see "should I insist on this coin in this swap or is it easy to get this one potentially from another person here on Numista?!" Regarding this question, I find the NRI extremely helpful!

I do also find the NRI very helpful, when buying coins, for example, or swapping, at least for who collect by type, if a coin is rarity "20+" it is sure is not a super common coin easy to get.

Better NRI than nothing.

Cita: "Smetsys"​I have seen numerous threads here now where people have literally hammered the Numista rarity index...I agree that it is not to be used to determine the coin's value...however I do not agree with declaring it "totally rubbish, stupid or useless"...when swapping coins and the negotiation it is down to a few coins where I have to decide which ones I rather want to have, I actually have a look at the NRI quite often....simply to see "should I insist on this coin in this swap or is it easy to get this one potentially from another person here on Numista?!" Regarding this question, I find the NRI extremely helpful!

​OK, from that viewpoint I can see a use, but it should not really be taken seriously on a greater scale. Amongst numista swappers it's OK for what it is.

Ole

I, too, reckon the NRI isn't that much of a use, except from what Smetsys stated. But it can give a hint of either how easy it is to get, or how desirable the coin is. I just see it as a fun detail, nothing more, nothing less.

On Colnect one can see how many collector who has the coin/banknotes in its collection. When it comes to banknotes in a give a small hint of which one is more common.
For example, say I can get a 1 Dollar note from 1965 and one from 1967 (or whatever dates there is), I can then see how many out of the 16,000+ collectors has them. If 125 people have marked the 1967 as "owned" but 385 people has marked the 1965 as "owned". Then maybe is more fun to go for the 1967. In might not mean much in the "real" world of collectors, but at least you can feel a little special a little now and then.

But in general I agree. It's important to know that the NRI is only a thing withing Numista. Outside of Numista a NRI 97 could be a RWCI* 23.

RWCI* Real World Collectors Index