The ones listed as 40% silver in the first section (1971~1974) are the 'Blue' and 'Brown' Eisenhower dollars. The "circulation strikes" are the blue packs, the "proof strikes" are the brown boxes.
The 1776-1976 dated 40% silver dollars were in three-coin mint and proof sets (Quarter, Half, and Dollar). There were no blue packs or brown boxes.
When the normal reverse resumed in 1977, the 40% silver coin was discontinued.
Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Coin Community assumes no liability for errors. Copyright 2005 - 2026 Coin Community Family- all rights reserved worldwide. Use of any images or content on this website without prior written permission of Coin Community or the original lender is strictly prohibited. Contact Us | Advertise Here | Privacy Policy / Terms of Use