DETECTIVE COMICS #312

Front cover shows notable wear: a vertical crease running down the left edge near the spine, soft/rounded corners, and general surface wear with slight discoloration especially along the top and left border. There is a small tear or nick at the top left edge and the spine shows some stress lines. Cover gloss appears diminished with minor foxing/staining. Interior pages and back cover were not visible for assessment.

Detective Comics #312 arrived in February 1963, part of the run of Batman adventures published before the 1964 "New Look" relaunch under editor Julius Schwartz beginning with issue #327. Like most Detective Comics issues of this period, the book was produced under editor Jack Schiff, with cover art most commonly attributed to Sheldon Moldoff working over Bob Kane's contracted signature, and interior stories typically scripted by veteran Batman writers of the era. The issue reflects the somewhat campier, gadget-and-gimmick-driven storytelling style that characterized Batman comics in the years just before Schwartz's stylistic overhaul, making it a representative artifact of that transitional period rather than a landmark single issue.

Market data shows a typical Silver Age back-issue value curve: prices are flat and modest through the low-to-mid grades (roughly $75-90 from grade 4.0 up through 7.0), then climb sharply at 8.0 and above, with a pronounced jump to $600 at 9.2. The scarcity of copies above 9.4 — only a handful on census and no 9.8 recorded at all — indicates that high-grade survivors are disproportionately rare relative to demand from Batman-run completists and Silver Age type-collectors. Sales activity is thin across the very top of the curve, but consistent FMV readings at 9.2 across recent 30/90-day/1-year windows suggest a stable, if narrow, high-grade market.

This issue trades primarily as a Batman-run filler book: attractive to collectors assembling complete Detective Comics sets or pre-New Look Batman runs, but without the crossover demand seen in key issues. Low- and mid-grade copies move steadily but cheaply as reading/run copies, while high-grade certified examples appeal to a narrower band of condition-census chasers willing to pay a steep premium for top-of-population slabs. Absent a recognized first appearance or landmark creative credit, value here is driven almost entirely by grade scarcity rather than character or story significance.