The most valuable issue of Life magazine is the April 13, 1962 issue covered by Liz Taylor and Richard Burton, which featured Mickey Mantle and Roger Maris baseball cards. The May 1, 1939 issue with Joe DiMaggio on the cover is also quite valuable.
Life magazines with sports stars on the cover tend to be among the most valuable issues. The Joe DiMaggio 1939 issue typically sells for around $150 as of 2014. The June 25, 1956 Mickey Mantle cover can fetch up to $100. The main reason the 1962 Liz Taylor and Richard Burton issue fetches as much as $200 is because of the rare Topps Roger Maris and Mickey Mantle baseball cards inside rather than because of the celebrities on the cover.