How much is an e pluribus unum coin in 1776-1976 coin worth?
Please take 10 seconds to look at your pocket change. EVERY coin has E Pluribus Unum on it so that doesn't help to ID a specific coin. In your case the dual date at least pins it down to a Bicentennial quarter, half dollar, or dollar. See the related questions for more.
How much is an E Pluribus Unum coin made in 1884 with an the eagle and a bit of writing on the front worth?
We need more information before we can tell you. All coins say "e pluribus unum," so that is not a unique feature. Looking at some coin sellers, 1911 Liberty Head nickels range from $2 to $20. The value of a coin is not just about its year-- it has to do with how rare the coin is, how many were put into circulation, and what condition the coin is in.