I inherited a coin “collection”, and I’m almost done sorting the coins. I’m not sure what to do next. There are lots of duplicates. Lots of desirable mintage, but poor condition. And lots of coins that seem to me to be pristine, but what do I know? The collection has not been touched since at least 1980. Many were in undated coin flips, some were in clear hard plastic containers (mostly mercury dimes, wartime nickels and a gazillion 1960d small dates!), some in coin collector folders (standing liberty quarters, buffalo head pennies, wheat backs, barber quarters and Canadian small cents), and some in paper rolls. My family helped me sort and put most of the coins into flips, and I catoged them in an Excel spreadsheet. What do I do next? How do I figure out which coins are truly collectible? I have the red book, but how do I know what grade my coins are, which are keepers and which are not? Do you keep them all? Guidance appreciated. Thanks!