JOURNEY INTO MYSTERY #107

Cover shows moderate wear consistent with a mid-grade Silver Age book: notable spine stress with visible ticks and a small color break near the top of the spine, mild corner blunting at top right and bottom left, and light overall handling wear/soiling to the cover surface. There is a faint vertical crease running through the lower figures and slight discoloration/toning at the edges, typical of age. The book is protected in a plastic sleeve which limits full assessment of spine roll and edge chipping; interior pages and back cover were not visible for review.

Journey Into Mystery #107, cover-dated August 1964, arrived during the high point of the Lee-Kirby Thor run and introduced Paul Duval, the Grey Gargoyle, a French chemist transformed into a living stone-skinned adversary after exposure to an alchemical formula. Scripted by Stan Lee with pencils by Jack Kirby and inks by Chic Stone, the issue is a straightforward but well-remembered addition to Thor's expanding rogues gallery, arriving a little over a year after the character's own origin in Journey Into Mystery #83. Grey Gargoyle would go on to recur steadily throughout Thor's Silver and Bronze Age history and later cross into animated series, video games, and other media, cementing his status as one of the more durable secondary villains from this stretch of the title.

The FMV curve reflects a book with broad circulation and steady collector demand rather than blockbuster grail status: substantial sales activity runs through nearly every grade tier, with values climbing gradually through the mid-grades before accelerating sharply above 9.0, where population thins considerably. That acceleration — a jump from roughly $450 at 9.0 to $2,600 at 9.6 — is typical of Silver Age Marvel villain-origin issues, where high-grade survivors are scarce relative to the much larger population of well-handled reading copies. Demand is driven primarily by Thor-run completists and villain-specific collectors rather than by casual first-appearance speculation, since the book lacks a headline character debut.

At the low and mid grades, this issue trades as an accessible, attainable piece for collectors assembling a Lee-Kirby Thor run without committing grail-level budgets. Mid-grade copies move steadily among Silver Age Marvel collectors who want presentable examples of the Thor rogues gallery on a page. High-grade certified copies, particularly in the 9.6-9.8 range where population is thin, draw stronger competition from registry-focused collectors and investors chasing scarce top-census Silver Age Marvel material, and pricing there is likely to remain sensitive to the rarity of any confirmed 9.8 sale.