Hmmm, curious. I was just giving approximate values for some coins I acquired and noticed on the NGC price guide higher values for lower grades, For example, a Morgan 1884-O in AU-55 is valued at $93 whereas a MS-61 is $75.00. Same for an 1883-O. Any thoughts?
I would bet that with the silver market rising at such a dramatic pace that the price guides aren't able to keep up.
Some coin issues did not circulate and most of them are higher grade coins. Therefore the price on them is lower because there are more of them. For the same coin that one piece circulated and became worn it’s harder to find so the price rises above the higher grades. If I’m building a G or F collection I’m willing to pay more for a date and mint mark that is the grade of my collection. An XF or AU grade would look out of place.