The is from a site that specializes in rare newspapers.
"The biggest problem with Kennedy papers is the simple rule of supply and demand. Because so many people kept these papers, there is a plentiful supply that collectors can tap into which makes their monetary value very low. (There are a few exceptions to this rule, such as afternoon editions of the Dallas newspapers and some "extra" editions that were printed the day of the assassination.
From a collection standpoint, most libraries already have microfilmed copies of the paper that are well-suited for research purposes. DPL, for example, has microfilm of the Denver Post, Rocky Mountain News, and New York Times, that include November 22, 1963. We also offer access to the New York Times Historical database, which includes electronic copies of articles from the paper of record."
From my research, I was able to determine a value of $250 for a pristine copy of the New York Times dated Nov 23, 1963 that not only included the Kennedy assassination but the news that Oswald was shot.
A private seller to a dealer or at auction can expect 30-60% of retail value.
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