First, what would be the time span. I decided 1793 through 1964. I was not interested in coins struck after the US stopped making silver business strikes. So I didn't include 40% Kennedys. Then I looked at what various places defined as a Type Set. I stuck with the easy ones to find: -- Dansco 7070 -- PCGS Registry Type Set -- NGC Registry Type Set The one that appeared to be most complete was the NGC Registry Type Set. Why did I decide that? There were more coins included than the other two. Then by looking through the Red Book I decided the NGC Registry Type Set wasn't complete so I have added one more coin to it. Here's what I finally came up with. (Hope this works; I've never posted a .txt before): http://www.dcderoo.com/Typeset2018.txt Anyway, that's my definition of a US Type Set.