This issue is from December 1978 featuring "Will The Last One To Leave Mercury Please Close The Planet?" by Len Wein, Paul Levitz, Joe Staton, and Dick Giordano and "A World For The Winning!" by Len Wein, Joe Staton, and Murphy Anderson.  Graded in very fine condition, but there is a small stain at the top of the book.

I do combine shipping...buy as many as you want and only pay the shipping amount on the single highest shipping amount in the item description (if you buy 5 items and all show $5.95 for shipping, you pay $5.95...I can send you an invoice or refund the excess back if you can't request an invoice). 

Scans are of the actual comics.  I've been collecting since 1973, and buying & selling on eBay since 1998.

Please see my eBay store for hundreds more Marvel and DC Comics, including more Superboy & the Legion of Super-Heroes series (#197 - 258), Legion of Super-Heroes (#259 - 313), Legion Baxter Series from 1984 (#1 - 63), Legion of Super-Heroes 5 years later 1989 series (#1 - 100), Legionnaires, Legion World, Legion Lost, Amazing World of DC Comics #9 Legion Special, Jack Kirby's 4th World titles Mister Miracle, The New Gods, The Forever People, and Jimmy Olsen, and runs of JSA, Justice Society, and All Star Squadron, among other things.