HOUSE OF MYSTERY #173

Cover shows a corner crease at upper right and light edge wear along the top and right border; slight rubbing/loss of gloss is visible especially on the black background areas. There appears to be minor bend/soft corner at bottom right and some faint surface wear over the dial graphic. No major tears, stains, or color breaks are evident, and the book appears to be in a protective sleeve. Interior and back cover were not assessed, so grade is based solely on the visible front cover.

House of Mystery #173, cover dated April 1968, arrived during the transitional period of DC's long-running mystery anthology before the title's late-1960s reinvention under editor Joe Orlando, which introduced the recurring host Cain in subsequent issues. This issue is a standard entry in the anthology's science-fiction and suspense-oriented run, offering short self-contained stories typical of the era's mystery line rather than any continuing character or landmark creative milestone.

The market profile reflects a low-population, low-demand book: only 21 Universal copies are recorded in the certified census, with sales data thinning out sharply above the 8.5 grade and effectively nonexistent at the top of the curve. The handful of recorded sales at 9.6, 9.4, and 9.2 show a normal steep grade-to-price curve for a Silver Age anthology title lacking a first appearance or classic cover, meaning most of the book's value is concentrated in high-grade rarity rather than character or creator demand.

This issue is best understood as a filler or completion piece for House of Mystery run collectors and Silver Age DC anthology specialists rather than a broadly sought individual issue. Lower and mid-grade raw copies trade inexpensively and are readily available, while a hypothetical 9.8 would command a strong premium purely on census scarcity, since no such copy has yet been certified. Demand is driven almost entirely by run-completion and census-chasing rather than character or story significance.