Marvel Masterworks X-Men volume 20 is a collection of Tales of Suspense issues 39-50 (featuring Iron Man's 1st appearance in Tales of Suspense #39).  The Marvel Masterworks series, which began in 1987, celebrates the early issues of the classic stories in a beautiful, collected edition.  This book is from a special, limited edition printing of only 183 copies (the most rare Marvel Masterworks Limited Collectors Edition we have come across).  These special editions are specifically noted on the rear dust jacket, and have a more brilliant, shiny, gold-embossed frame on the front cover than do the first printings.  This book is in LIKE NEW condition, still sealed in its wrap from the printer.