A missing coin, or an extra coin, coins reverse up, or a coin missing and having two of another are all just packaging errors and have nothing to do with the mint at all. (The packaging is contracted out, not something donw by the mint itself.) Such packaging errors are uncommon but not rare and they are worth very little as most people would rather have a perfect set.
My 1981 set has the SBA Dollar sealed in with the Kennedy half dollar. The slot where the SBA is missing is sealed and not broken. This is indeed a packaging error.
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