AVENGERS #6

This 1964 Silver Age key (first appearance of Baron Zemo and the Masters of Evil) shows heavy handling wear: significant tears and paper loss along the top edge with a brown staining/foxing discoloration that has partially obscured the title logo, multiple long creases running through the cover art with visible color break, spine stress lines and roll, and rounded/worn corners at the lower edge. There is pencil handwriting in the upper right corner. Overall the cover is intact but heavily distressed; back cover and interior pages were not assessed from this photo.

Avengers #6 (July 1964) introduces Baron Heinrich Zemo in his signature purple mask and cowl, and with him the debut of the Masters of Evil, one of the more enduring supervillain teams in the Marvel Universe. Plotted by Stan Lee with artwork by Jack Kirby and inks by Chic Stone, the issue arrives early in the Avengers' original run, a period now closely tied to Kirby's foundational work on the team's rogues' gallery. Zemo's ongoing feud with Captain America, seeded here and expanded in subsequent issues, becomes one of the more consequential subplots of the Silver Age Marvel line and ties directly into Zemo's later modern-era prominence.

The book's demand curve reflects a first appearance with broad character-driven appeal rather than a single blockbuster crossover tie-in. Certified population is substantial across the mid grades, with pricing relatively flat through the 4.0-7.0 range before climbing sharply above 9.0, a pattern typical of desirable but not ultra-scarce Silver Age Marvel keys. Recent 9.8 sales in the $5,000-plus range, supported by a healthy one-year average near $5,368, indicate sustained high-grade demand even as supply at the top of the census remains thin relative to overall population.

This issue trades as a strong second-tier Avengers key: consistently sought by Captain America and Avengers team-run collectors, Silver Age villain-origin specialists, and CGC census chasers targeting early Kirby Avengers material. Lower and mid-grade raw copies move steadily as affordable entry points into the run, while pristine 9.6 and 9.8 slabs command a real premium reflecting scarcity at the top of the grading pyramid. Long-term collecting interest is likely to track Zemo's visibility in modern Marvel media and the broader strength of early Avengers keys.