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Every comic collector has had the daydream: an old cardboard box in a relative's attic, and inside it, the books everyone else is hunting for. For whoever originally bought the books in the Merrimack Valley Collection, that daydream turned out to be real: a stack of Golden Age keys in jaw-dropping condition. When the books crossed the auction block last month, they didn't just set strong prices. They tilted the whole graded-comics market toward the 1940s.

The collection

Heritage Auctions offered the Merrimack Valley Collection in its Comic Books Signature Auction, held September 24 to 26, alongside a Comic Art Signature Auction held September 25 to 27 (CGC). It's an original-owner collection that, in the words of Heritage Vice President Aaron White, "spent the last 75 or 80 years in a cardboard box," yet the books were in "stunning" condition (Overstreet Access). Condition is everything with Golden Age books. High-grade Golden Age books are scarce, so finding many in one place is rare.

The headline sales

The star was Captain America Comics #1 in CGC 9.0, which sold for $716,750. This is the 1941 book with the first appearances of Captain America and Bucky, the debut of the Red Skull, and the famous cover of Cap punching Hitler. Other Merrimack Valley highlights, all per Overstreet Access:

• Captain America Comics #3, CGC 9.4 (the second-finest known copy, Alex Schomburg cover): $268,400

• Batman #1, CGC 2.5: $158,600

• Batman #9, CGC 9.0: $103,700

• Batman #7, CGC 9.0: $56,120

• Captain America Comics #2 (CGC 8.5) and #5 (CGC 9.0): $43,920 each

• Batman #5, CGC 9.0: $39,040

The collection even included the first nine issues of Batman. Across both events, Heritage's comic book and comic art auctions together realized $18,174,129. That was about $8.43 million from comics and $9.75 million from original art.

How one book moved a whole market

Here's what makes this more than an auction recap. Market tracker GPAnalysis, writing at The Collector Hub, measured the CGC comic sales it tracked from September 22 to October 5. That came to 20,904 books and $13.44 million in sales, at a median price of $105.

That one Captain America #1 accounted for about 5.3% of every dollar spent on CGC comics in the entire two-week window. The 1940s' top five titles combined for about $2.81 million, roughly 77% more than the 1960s. Captain America Comics alone brought in more than $1.5 million.

GPAnalysis summed it up neatly: Spider-Man drove the transactions, and the Golden Age drove the dollars. Amazing Spider-Man (1963) was the volume king, with 1,260 books sold for about $1 million. Captain America Comics alone ($1,516,158) out-earned it.

It wasn't only the Golden Age

Other results from the same Heritage events show depth across eras (Overstreet Access):

• Wonder Woman #1, CGC 8.5: $158,600

• Avengers #4, CGC 9.8 (Captain America's first Silver Age appearance): $134,200

• Amazing Fantasy #15, CGC 7.0: $122,000

• Amazing Spider-Man #252, CGC 9.9: $73,200

• The Walking Dead #1, CGC 9.9: $56,120

On the original art side, Jerry Robinson's Detective Comics #68 Two-Face cover led at $475,000, and a Frank Miller Daredevil #168 page featuring Elektra's first story brought $450,000 (Overstreet Access).

What it means for collectors and flippers

• Condition is the story. A Batman #1 in CGC 2.5 still cleared six figures. High-grade Golden Age copies are in a different universe. If you own early Timely or DC books, a professional grade matters enormously.

• One sale can distort the comps. When a single book is 5% of a fortnight's market, averages and "market up X%" headlines can mislead. Look at specific issue and grade comps, not aggregate totals.

• Modern isn't dead. Absolute Batman dominated 2020s sales in GPAnalysis's data, with $223,972, about 85% of the decade's top five (The Collector Hub), and 9.9 copies of Modern keys are fetching real money.

What to watch next

• Census changes. Fresh, high-grade copies entering the CGC census can reshape the pricing for those issues, including how many copies sit at or above each grade.

• The next GPAnalysis fortnight report. Did the Golden Age money keep flowing without a Merrimack-sized consignment? That will show whether this was one collection or a broader trend.

• More "attic finds" hitting auction. Speculation: results like these tend to motivate families with old collections to consign.

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