This issue is from August 1968 featuring "The Colossal Failure!" and "When Superboy Walked Out On The Legion!".  Graded in fine condition due to a light stain at the lower corner of the back cover.

Scans are of the actual comic.

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 $4.95 for shipping, you pay $4.95...I can send you an invoice or refund the excess back if you can't request an invoice). 

Please see my eBay store for hundreds more Marvel and DC Comics, including more Legion of Super-Heroes series, 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.