The Flash: Undervalued Issues and Silver Age Keys

The Flash is one of DC's most era-spanning characters: Jay Garrick debuted in Flash Comics #1 (January 1940, Gardner Fox and Harry Lampert), Barry Allen relaunched the Silver Age in 1956 with Showcase #4, and Wally West took over from 1987 onward. That editorial depth creates a wide range of keys — from grails far beyond most collectors' budgets, to historically significant issues that remain genuinely accessible — provided you know which is which.

This guide sticks to verifiable data: documented auction records from Heritage Auctions, GoCollect, and specialist guides for Silver Age keys where eBay listing volume is too thin to produce a reliable median, and eBay data from our estimation tool where the signal is solid. Unconfirmed figures stay qualitative.

Flash key issues at a glance (real data, June 2026)

Silver Age Flash keys are nearly absent from active eBay listings: the signal is too thin for a reliable median. Auction records are the only meaningful benchmark here. Conversely, issues from the 1970s and 1980s trade freely on eBay for just a few euros.

Sources: Heritage Auctions, GoCollect, QualityComix, Key Collector Comics.

Showcase #4: the inaccessible grail that started everything

Published in October 1956, Showcase #4 is the birth certificate of the Silver Age of comics. Robert Kanigher scripts the origin story of Barry Allen, John Broome writes the second tale, and Carmine Infantino pencils both — with inks by Joe Kubert. Barry Allen, a police forensic scientist, gains super-speed after a laboratory accident: the formula that relaunched an entire industry. This issue is catalogued under the Showcase series on eBay, not under Flash, and does not appear in our estimation tool's results. Auction records are the only meaningful reference:

• All-time record: $900,000 for a CGC NM+ 9.6 copy (white pages), sold at Heritage Auctions in early 2024 — the record for a Silver Age DC comic. That same copy had fetched $179,250 back in 2009.
• Even a low-grade (GD 2.0–2.5) copy represents several thousand dollars for most collectors.

Flash #105 and #110: double keys, but thin on eBay

Flash #105 (February–March 1959) is both the first issue of Barry Allen's Silver Age solo series — picking up the numbering from the Golden Age Flash Comics, which had ended in 1949 — and the first appearance of the Mirror Master. Overstreet ranks it among the 50 most important Silver Age comics. The single active eBay listing (€9) is far too thin to constitute a reliable price signal: auction records are the only reference here. A CGC 9.4 copy reached approximately $38,800 at Heritage Auctions in 2011.

Flash #110 (December 1959) is an even more sought-after double key: it contains both the first appearance of Kid Flash (Wally West, Iris West's nephew) and the first appearance of the Weather Wizard. Wally West would later become the Flash that defined an entire generation of readers. No active eBay listings allow a median to be established. A CGC 9.6 copy reached approximately $9,750 in 2010 — mid-grade copies remain in a more accessible range for patient collectors.

Flash #123: the issue that invented the DC multiverse

Published in September 1961 and titled "Flash of Two Worlds", Flash #123 is arguably the most conceptually significant issue in the entire history of The Flash, and perhaps of DC Comics. Barry Allen is involuntarily transported to a parallel Earth — Earth-Two — where he meets Jay Garrick, the original Golden Age Flash. Written by Gardner Fox and drawn by Carmine Infantino, this story effectively creates the DC multiverse, a concept that still structures the entire DC publishing line today. No active eBay listings exist for this issue. The reference copy is the Western Penn pedigree CGC 9.4, sold at Heritage Auctions in 2004.

Flash #139: first appearance of the Reverse-Flash

Flash #139 (September 1963) introduces Professor Zoom — alias Reverse-Flash, alias Eobard Thawne — a time-travelling villain from the 25th century obsessed with Barry Allen. Written by John Broome with art by Carmine Infantino, the character became one of DC's most important antagonists, his profile boosted enormously by his central role in the CW television series starring Grant Gustin (launched in 2014, running nine seasons) and by the Flashpoint storyline. No active eBay listings allow a median to be quoted. A CGC 9.6 copy sold for approximately $8,300 — the record for this issue. Mid-grade copies trade at a considerably more accessible price point.

Genuinely accessible entry points: Bronze Age and Copper Age

If Silver Age Flash keys are grails reserved for serious budgets, the character's run offers real entry points elsewhere. Bronze Age and early Copper Age issues (1970s–1980s) trade freely on eBay for a few euros: our estimation tool returns a median of €4 across common issues from the 1959 series. The Flash vol.2 #1 (1987, Wally West as the Flash, written by Mike Baron, drawn by Jackson Guice) is an editorially significant milestone but remains very affordable — active eBay listings are few and mixed with other series, making the signal thin. The Wally West run — particularly the celebrated Mark Waid era (1990s) and Geoff Johns' Rogues Gallery issues (2000s) — offers excellent value for collectors interested in storytelling quality over key-issue speculation.