Detective Comics #400 is the first Man-Bat, and a CGC 9.0 of it costs about a thousand dollars. Among 269 documented sales it is the most accessible first appearance anywhere on my Silver Age list.
A CGC 9.6 of X-Men #12 sold for $24,000 while the most recent 9.8 brought $9,545. The higher grade is worth less, the reason is entirely about when and where each sold, and it is worth understanding before you price a copy.
The CGC 8.5 lane of Action Comics #252 sold six times in two years between $16,800 and $26,400, with no pattern in the dates at all. On the first Supergirl, that noise is the most useful thing I can show you.
Twenty-six documented sales share one grade on Amazing Spider-Man #13, and they cluster tightly enough that I will give a number over the phone. After several pages of markets that refuse to settle, this one behaves.
Star Trek #1 has a photograph on the cover instead of artwork, and photographic stock shows every crease and scuff that line art hides. That single fact explains most of the distance between the top and bottom of its 235 documented sales.
A CGC 9.2 of Tales to Astonish #35 sold for $29,875 in 2012 and $16,470 in 2026. Fourteen years, a run of superhero films, and the grade is worth about half what it was. This page is mostly about why.
Flash #105 is the first issue of the Flash’s own Silver Age title and it is numbered 105, which confuses almost everybody who finds one. The numbering, and what the 209 documented sales say about it, are what this page is for.
Fantastic Four #12 puts the Hulk on the cover of somebody else’s comic for the first time, which is why two sets of collectors want it. That double demand shows up clearly in 254 documented sales.
Justice League of America #21 is the first Silver Age Justice Society, an important comic that sells for under two hundred dollars in the grades most copies survive in. On this one the grading fee genuinely exceeds what the grade is worth.
Vampirella #1 is a black-and-white magazine rather than a comic book, and that changes how it survived, how it is stored and what a collector will pay. The 249 documented sales behind it look different from every other book on this list.
