What is the value 1880 e pluriebus unum series o?

Answer 1

Are you talking about the 1880-O silver dollar which says E Pluribus Unum on the front of the coin? If we're talking about the same coin, the "O" (if it's found above the "DO" of "dollar") means it was made in New Orleans. There are a few things to consider before answering that question: what is the condition (uncirculated? worn? cleaned? scratched?), and does it show any signs of 1880/1879 overdate? Ultimately though, all "book values" are just fantasy numbers unless your coin stands out to a dealer or a collector out there who's willing to pay a price above the silver bullion value of this coin (about $10-$12), otherwise that's what you're probably going to get and it may be more worthwhile to save it as a novelty.