SHOWCASE #23

This early Silver Age Green Lantern try-out issue shows notable wear consistent with a well-handled Golden/Silver Age book: heavy spine stress with visible white ticking and a small chip at the top spine edge, rounded and softened corners (especially top-left and bottom-right), and a faint diagonal crease running through the lower cover art. There is also light staining/discoloration near the top-left edge and general surface soiling across the pink background, along with a hint of color break along the spine fold. Interior pages and the back cover were not visible in this photo and were not assessed, so the grade reflects front-cover defects only.

Showcase #23 arrived in December 1959, following directly on the heels of Showcase #22's introduction of Hal Jordan two months earlier. Written by John Broome with a cover and interior art by Gil Kane (inks by Joe Giella), this issue confirmed that DC's revamped Green Lantern was not a one-off try-out but a character built for an ongoing feature, cementing the Silver Age reinvention of the Golden Age Alan Scott concept into the space-opera mythology that would define the character for decades. Its place in the Green Lantern try-out run (Showcase #22–24) makes it an essential companion piece to the true first appearance, and it remains one of the foundational books of the Julius Schwartz-edited Silver Age revival at DC.

Market data shows a steep, non-linear climb in value once copies clear the mid-grade range: prices hold in the low hundreds through grade 5, then accelerate sharply from 8.0 upward, with a lone certified 9.2 trading in the mid five figures against a 9.0 at roughly half that price. With no 9.6 or 9.8 copies yet certified out of 520 total graded, the top of the census remains open, which tends to inflate hypothetical high-grade value further due to scarcity and the near-mythical status a first 9.8 would command among Silver Age DC collectors. Demand is driven primarily by Green Lantern completists and Silver Age DC try-out collectors who treat the Showcase #22–24 trio as a unit.

This is a book that trades actively across the grading spectrum, with low- and mid-grade copies functioning as accessible entry points for collectors building a Green Lantern run, while high-grade certified copies are chased by advanced Silver Age specialists and investors targeting scarcity plays at the top of the census. Because no 9.8 exists, any future discovery at that grade would likely set a new benchmark price, and until then the book's high end remains a matter of informed extrapolation rather than realized sales.