What's up with the chart and numbers for the NGC Price Guide, NGC ?
This is -- or could be -- a REALLY USEFUL tool for collectors and investors, especially novices. Instead the numbers are all over the place.
Let's check out an MS62 1907 High Relief. Should go for about $12,000 give-or-take.
But the chart has it at $19,000:
https://www.ngccoin.com/price-guide/united-states/gold-double-eagles/70/history/19135/62/
I'm not sure what the algorithim is to calculate the latest prices, because I only see sales data from late-2019, but even that isn't anywhere near $19,000:
https://www.ngccoin.com/auction-central/us/saint-gaudens-20-1907-1933-pscid-70/auctions/1907-high-relief-20-ms-fgrade-62-tgrade-62-coinid-19139
Am I using this tool correctly ? I don't expect it to be super-accurate, but within 5-10% shouldn't be a problem. 30-40% seems really off. I think the trend of the chart is still useful over longer periods of time, but it would be better if the end-point for the recent data was closer to reality.