10
4 decades, 4 years
A 1776-1976 no proof quarter dollar worth in 2012
A decade is equal to 10 years. Convert the decades to years. The idea is to subtract the specified number of years from 1826.
76
20
A decade is 10 years, 200 years between 1776 and 1976 so the answer is 20 decades.
10
From 1776 -1976 there were 49 leap years.
200 of them.
200
4 decades, 4 years
200 of them.
3752
Please take another look. The U.S. was still at the start of the Revolution in 1776 and didn't issue any quarters until 2 decades later. You almost certainly have a Bicentennial quarter with the dual dates 1776-1976 in honor of the country's 200th anniversary.
200
What is the value of my coin-1776-1976 Eisenhower Liberty dollow?