ACTION COMICS #300

Graded at 3.0 (GD/VG) on 2026-10-20, from new photos taken out of the sleeve: front, back, spine and interior page. Spine edge frayed and chipped along its length with short splits at the staples. Faint pencil mark in the DC bullet. Cover trimmed a touch short at the right edge. Heavy stress lines on the spine. Rounded, worn corners with ink loss at bottom left. Dull, tanned cover with light soiling. Tan pages.

Action Comics #300, cover-dated May 1963, arrived deep into DC's Silver Age Superman line at a point when the anthology-style Action Comics format regularly paired a lead Superman adventure with backup features starring Supergirl. The issue reflects the house style of the period, with contributions typical of the era's Superman family creative teams, but it does not carry a recognized first appearance, origin story, or landmark creative milestone that collectors and price guides single out as a key issue. It is best understood as a representative, well-produced entry in a long-running and heavily collected Silver Age series rather than a standalone event book.

Market data shows a large certified population (128 Universal copies of 132 graded) with a dense cluster of sales across mid and high grades, indicating steady collector interest driven primarily by series completism and character continuity rather than speculative demand. Pricing climbs gradually through the mid grades before accelerating sharply above 9.0, a pattern typical of common Silver Age Superman titles where survivorship in top grade is scarce and disproportionately rewarded. The absence of any 9.8 or higher certified copies on the census underscores how few examples of this issue have survived in near-pristine condition, despite the overall population being substantial.

This is a book that trades as a building-block for Superman and Action Comics run collectors rather than as a marquee acquisition. Lower and mid-grade raw copies move steadily at modest prices, appealing to readers and completists filling gaps in a long run, while top-tier certified copies command outsized premiums almost entirely on condition rarity rather than content. Buyers pursuing this issue are typically assembling a full Action Comics Silver Age set or a Superman/Supergirl character collection, and the book's value ceiling depends heavily on the eventual certification of a true gem copy at the top of the census.