What you have is a US Eisenhower dollar made in 1976 to commemorate the US bicentennial, and there should be a Liberty bell in front of the moon on the reverse. Most of them are worth just a bit over face value. The only ones with silver have an S mint mark, and then not all of the S s though the silver and proof ones are worth a few bucks. By the way, E pluribus unum is Latin, and it means out of many, one. I hope that helps.
Many people would like to, but few have any idea of how much it is worth. Maybe go to a coin collector to find out how much it is worth. I can tell you it isn t going to be worth more than five dollars. I remember when they used the copper in the quarters, and silver dollars, it s not that old.
try selling it on ebay