ACTION COMICS #664

Cover shows strong gloss and sharp corners with no visible creasing or spine stress; the book appears to be in a protective sleeve which limits full assessment of edges. No fading, tears, or color breaks are visible in this photo. Interior and back cover were not assessed, so grade is based solely on the visible front cover surface.

Action Comics #664 carries Phase Five of "Time and Time Again," the 1991 crossover that ran across the four monthly Superman titles and stranded the Man of Steel at successive points along the timestream. Roger Stern scripts, Bob McLeod handles pencils and inks, and Kerry Gammill and Dennis Janke supply the cover. The chapter drops Superman into the age of the dinosaurs, where weeks of isolation end with the arrival of the time-displaced Atom foe Chronos, whose theory that explosive force triggers the jumps sets up the storyline's resolution; the issue also lays out the unusual origins of Host. It sits inside the well-regarded Carlin-office run that reshaped the Superman books between the Byrne relaunch and the Death of Superman cycle, but the storyline's genuine collector attention has always attached to the neighboring identity-reveal issue rather than to this installment.

Market profile is that of a plentiful late-Copper DC monthly. Print runs in 1991 were high, distribution was split between direct market and newsstand with no premium generally paid for either on this issue, and surviving copies are abundant in high grade, so raw examples trade as run-filler through dealer bargain inventory and multi-book eBay lots. Demand comes chiefly from readers assembling the complete "Time and Time Again" arc in floppies, aided by the fact that the storyline has been collected in trade; that keeps a modest, steady turnover without producing price appreciation. Certified examples are effectively nonexistent, and the few that reach the market are priced on the cost of the slab and shipping rather than on scarcity of the underlying book.

Buyers are Superman run collectors, Chronos and Legion-adjacent completists, and dinosaur-cover specialists — an audience that pays for condition and convenience rather than for the issue itself. Across grades the spread is compressed: worn copies are pocket change, mid-grade copies bring only slightly more, and the whole raw curve flattens well below the price of certification. Anyone considering submission should treat it as a completeness exercise for a graded run set, not a value proposition, and dealers are best served moving this book in bundled arc sets or as part of a broader early-1990s Superman group.