I know this feature has been discussed before, but I believe I have some new suggestions (or at least ones worth revisiting if they've been buried):
Automatically consider bullion value, for all precious metal coins, by bounding the Numista estimate below by the bullion value. I currently have an estimate for 73% of my collection that is lower than my combined BV. Clearly gold frequently lacks the crowdsourced Numista values, and some silver too - the user should not be left guessing at what overlap these values might have. It also rarely makes sense that some Numista values come to well below BV, and this should correct these underestimates too.
The same, but for current coins with "translatable" face value. I believe this was suggested before, but now we're on our way to a data point that records whether coins are currently circulating, we can do away with some more obvious underestimates (especially for those lacking a Numista value).
A combined collection value estimate: your value for your coins where given, plus the Numista value for the remainder. This would be of especial help to those with both bulk and quality in their collections, who need to specify the values of some coins, but let the computer do most of the work. It also helps adjust for, say, coins with cleaning or damage, where overriding with a lower estimate may be needed. Relatedly...
Search your collection by whether, and how they have been valued. I can see an automatic estimate for 73% of my coins, but which 27% have been missed? This makes input of personal estimates a lot easier.
Hope this all makes sense, and that my suggestions can help make this estimate closer to reality, and easier to interpret.
Thanks!
This all sounds reasonable. My only concern would be pieces yet to be demonetized but whose currency has fallen dramatically in value to the point where the face value is fractions of a cent/penny. Would we display 0 then?
Former Numista referee for banknotes from Ireland, Northern Ireland, Scotland, Wales and Saint Helena.
For precious metal coins could an algorithm be used to take what you paid for the coin on the date that you you enter the price and subtract the BV for that date to then give a % premium that could be applied to other coins. So you get a BV value but in the grid you get the BV+premium/numismatic value.
We're basically trying to work out the premium added above BV
Cita: "ceh2019"This all sounds reasonable. My only concern would be pieces yet to be demonetized but whose currency has fallen dramatically in value to the point where the face value is fractions of a cent/penny. Would we display 0 then?
I suggested that we use the greatest of the three values (if they apply): current Numista/face value/bullion. The result of which can of course be overridden by a personal evaluation.
Cita: "peterjhalford"For precious metal coins could an algorithm be used to take what you paid for the coin on the date that you you enter the price and subtract the BV for that date to then give a % premium that could be applied to other coins. So you get a BV value but in the grid you get the BV+premium/numismatic value.
We're basically trying to work out the premium added above BV
This of course would be ideal, but I think I might not be so keen on this one if I were doing the coding.
a flexible and neutral way is, to add some tools in the swap, so the two parties can define, share and discuss each coins' swap value in their own way, and calculate the summation.
Cita: "aephi"a flexible and neutral way is, to add some tools in the swap, so the two parties can define, share and discuss each coins' swap value in their own way, and calculate the summation.
I think this is a quite separate proposal to solve a different problem, and not one I'm too enthusiastic about, if I'm honest.
I wasn't thinking of improving swaps, because I wouldn't rely too much on those values anyway; what I wanted was to calculate a better estimate for the total value of my collection, and more easily. At present, the estimate seems wildly misleading, while surrounded by other statistics that are far more useful or interesting (see high-quality technical diagram below).
