DETECTIVE COMICS #347

Cover shows notable wear including a visible spine split/tear at the left edge near the top, general spine stress lines, and soft/rounded corners. There is surface wrinkling and a crease running through the newspaper graphic on the lower left, along with some edge wear and slight discoloration along the left border. The cover gloss appears diminished with light soiling; interior and back cover were not assessed.

Detective Comics #347 arrived in January 1966 during the celebrated "New Look" era that Carmine Infantino ushered in with issue #327, streamlining Batman's costume and visual identity for a new generation of readers. This issue continues that house style, pairing a Batman and Robin lead feature with the Elongated Man backup strip that ran through many mid-1960s issues of the title, giving the book a dual appeal to both Batman completists and fans of Ralph Dibny's stretching detective. It is a representative example of the writing of Gardner Fox and the clean, kinetic linework Infantino brought to the Bat-titles in this period, but it does not carry a first appearance, origin story, or other event that price guides single out as a landmark moment.

The certified population of 87 CGC Universal copies, concentrated in the 8.0 to 9.4 range, shows a fairly typical Silver Age demand curve: raw and low-grade copies trade near a soft floor in the $55-65 range, while values climb steeply once a copy clears the 9.0 threshold, more than tripling by 9.6. With only three copies graded 9.8 and no completed sales recorded at that grade, top-end demand is inferred rather than directly observed, and the gap between 9.6 and 9.8 is likely to be wide given how few copies exist at the summit. This is a book bought primarily to fill out a Detective Comics or Batman New Look run rather than for headline key-issue speculation.

Expect steady but modest turnover: raw copies in low and mid grades move readily among Silver Age Batman collectors assembling long runs, while CGC 9.6 and 9.8 copies will draw targeted bidding from census-chasers and registry set builders precisely because of their scarcity at the top. Absent a rediscovered first appearance or creator milestone tied to this specific issue, the book's ceiling is set by condition rarity rather than character or story significance, and pricing should be expected to track the broader Silver Age Batman market rather than move independently.