Rarity assessment of coins with mint errors.
Matematics
Posts: 16 ✭
Good day. Well, I submitted my 3 coins, with mint errors, for NGC certification... the coins should be returned somewhere in half a year, that is, around 12/12/2026... Well, while I'm waiting, I should at least calculate the reserve price for each coin for the auction... because given the auctions' approach to these coins, there is no hope of an auction that corresponds to the value, so it is imperative to insure yourself so as not to lose your valuables due to the incompetence of third parties... Although I myself have only been taking numismatics seriously for a few years... so I am still quite new to these issues 
... So I decided, as an amateur, to calculate it publicly on this forum, to determine the value of coins along established numismatic rules.... I really hope that this does not violate the rules of your forum, because there is a desire to receive corrections and examples from other like-minded people, because I am a newbie... thank you very much for your understanding. In this video, I amateurishly define the three bases by which I will assess the rarity of a coin with mint errors. 
https://www.youtube.com/watch?v=BUW8uXiXRn0 So if you want to post your own coins evaluations in this topic, then do so, when I post my amateur evaluations of the three coins. Then everyone is free to post their own. But on the one condition, that the coin has Mint Errors on all Three Sides, which are the obverse, the reverse and the edge. Thank you for your understanding. And have a pleasant and fruitful time about the world of numismatics. I wish everyone happiness
Comments
I think you are going to be disappointed when you get your “error” coins back.
Thinks like scratches and gouges are not errors, they are damage. Even your
double rim is probably a misaligned die which looks to be in spec.
Can you supply a clear photo of both sides of one of coins so we may evaluate it.
Well, I really don't understand the premise of this, unless it's shooting for the sky for/with post-mint damage.
If a coin has "multiple errors" on it, then it's almost entirely certain that it's not a mint error or variety, but rather just damage. Ockham's Razor says that the most likely explanation for a coin with multiple defects is the simplest explanation: that a single event has caused all of the damage.
In the extremely rare circumstance that a coin actually does have multiple independent errors on it, then the value is not going to be simply additive, due to the rarity of having multiple independent errors happening simultaneously.
For example: suppose a 1955 doubled die penny is worth about $2000 in AU. An off-centre normal 1955 penny might be worth say $100. But an off-centre doubled die penny is going to be worth a lot, lot more than $2100 - assuming such a coin were to actually exist, which it probably doesn't.
Roman emperor Marcus Aurelius, "Meditations"
Apparently I have been awarded the DPOTD twice.
My first coin would be a 1 Euro coin from Spain, minted in 2008.
https://www.youtube.com/watch?v=Q6QoN2mRAs0&t=5s
https://www.youtube.com/watch?v=YqsFTYjRnP0&t=61s
A more detailed review can be seen in these videos
Enjoy your viewing.
And the second coin is on his way
Big disappointment ahead.
Sorry, but that 1 euro coin absolutely, definitely does not have any mint errors on it at all., It is all merely post-mint damage. Your coin might still be worth 1 euro, it might be considered too badly damaged to be legal tender any more (depends if it still passes a vending machine test). It is definitely not worth 10 euro, let alone the thousands or millions you seem to think it might be worth.
Once again, you do not calculate the value of an error by assigning values to individual nicks dents and scratches and then adding up all the numbers. That's not how coin valuations work.
Roman emperor Marcus Aurelius, "Meditations"
Apparently I have been awarded the DPOTD twice.
In looking at the images only (not the video), all of the coins look circulated.
Even as a legitimate error, I've never heard of common coins like these being worth much of anything in the condition illustrated.
"So, I think that the value of each more obvious error is at least $1000."
I would take the "Under" on that.
So maybe you could tell me how you think coin valuation works?
... that would be a great lesson... Thank you. 
Amazing
thanks to you, we decided that once the NGC certification is confirmed, we will put this coin up for auction at a reserve price of x3, which is 3.36 million, and when, no one will buy it, we will keep it for ourselves 
Thanks for the good idea 
A coin is valued as a whole, entire coin, rather than the sum of it's parts.
The value of a coin - as with the value of anything else, really - is a result of supply and demand. "Supply" is its rarity - how many of the things actually exist and are available for people to buy. "Demand" is how many collectors actually want it. For a coin to be valuable, it needs to have both low supply (high rarity) and high demand. There isn't a strict, logical mathematical formula I can give you, because coin valuing is fundamentally illogical, fueled to an extent by marketing and sentiment.
The 1955 DDO Lincoln cent is an excellent example. The rarity is fairly fixed - we think there are about 20,000 of the coins in existence. The demand, thanks to decades of hype and the fact that a lot of Lincoln cent albums provide an empty hole for this variety, far exceeds the 20,000 supply. The coins are, therefore, valuable. There are plenty of much "rarer" error coins that have a much lower value than the 1955 DDO, simply because no-one has heard of them and there's therefore much less demand for them.
Roman emperor Marcus Aurelius, "Meditations"
Apparently I have been awarded the DPOTD twice.
If all 3 of your coins are like the one shown through all the images, the value of your coins will be "-120 US", the cost to get them certified. I see no errors at all in your images (not the video), just normal wear and tear from being circulated. Sorry, but you should have posted your question BEFORE sending them to a TPG.
Yes, all three are similar and until they are certified, they are worth 1 euro
but if the certification confirms that the errors were made at the mint... then all this turns into coins of exclusive rarity... because they all have at least a few Mint errors that cause great interest among collectors... and such variations in these 3 coins are rare and even exclusively rare 
... therefore, the only thing we have to do now is wait for confirmation or denial from the certification body 
and only then will it be clear how rare they are 
Well, now we continue the calculation and continue our journey through the intricacies of numismatics 
Well, I wish you good luck and pass along to you "don't believe everything that you see on youtube".
There is no way anyone "taking numismatics seriously for a few years" thinks these are errors. And then that they are prized by numismatists. And worth any money.
Is this real? Please tell me this is a troll?
God helps us
Are you going to send them in to get cac'ed?
So here comes the presentation of the second coin calculation... but I want to say in advance that this calculation completely FAILS... because you will see when the presentation of the third coin is calculated, which has only a little more than 12 errors... And such a calculation method does not reveal its true value and rarity at all... so that such a calculation does not reflect the true value. But for the sake of fun and for the sake of science, so to speak
, let's continue to the end and make sure that it is true that such a calculation fails and therefore it is not valid 
For a more detailed look at the coin, if you are interested, you can watch these two videos.
Enjoy...
And until the third coin representation to fulfill the idea to the end 
This coin is a French 2 Euro Cent, minted in 1999.
It is known that sometimes there are double or even triple solar systems... then I think that the highest possible price is when there are two or even three suns in one solar system 
As we mentioned earlier, this calculation failed to calculate the value of a tiny but very valuable coin. Therefore, this only confirms that the real value, as Sapyx already mentioned, arises from supply and demand, and the value grows with high demand and low supply... So apparently, the interest of collectors gives the initial value of the coin and then all other errors act as an increase in the initial value given by collectors. This can be imagined as a solar system where the Sun, is the starting value that collectors indicate, and the planets orbiting the Sun are all other mint errors that add value to the already existing starting value...
For a more detailed look at the coin, if you are interested, you can watch these two videos.
As I mentioned after I publish 3 coins, anyone who wants to publish their coin with available mint marks on all 3 sides. I kindly invite you to do so. Even if you are not sure whether it can be a coin with mint marks on three sides, please post it here and we will try to find the answer together and we will all have a good time
Thank you for your attention. Enjoy your journey through the world of numismatics... 
I think that you need to look up the definition of "error" in both the dictionary and any reputable coin book ... I would suggest Wexler. You have a nice Euro collection worth 3 euros. I also think that you should reread the comments from the folks here on what they have told you.
Yes, doesn't it look very silly
Could be wonderful if you post some example of the real double mint error coin with the error on all three sides of the coin that could be worthy 
Thank You very much 