The Comic Book Collector's Blog

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Practical guides, expert advice and resources to manage, value and grow your comic book collection.

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Collector's Guide

Power Girl crossovers: two redesigns that define her

Only one crossover matters, and it doesn't feature her: the 1980s overhaul that removes her world. Twenty years later, a second gives it back to him.

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Collector's Guide

The Mister Sinister crossovers: the invisible sponsor

Mutant Massacre (1986) which he sponsored before existing, Inferno (1988-1989) which delivers the answers, and 2019 where he ceases to be a participant to become a play.

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Comics History

Loki's universe: Thor, Odin, Asgard

An entourage borrowed from a pre-existing mythological background: its figures have no origin to tell. The market pays for invention, not staging.

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Films & Series

Spider-Man Unlimited versus the comics: the hero deprived of his city

Spider-Man Unlimited (1999) vs Thor #134 (1967): Counter-Earth of the High Evolutionary, and what we lose by moving a character defined by an address.

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Valuation

First team appearances: where to invest in comics

Investing in the first appearances of comic book teams: why a roster has the potential for adaptation, which key numbers to aim for and how to avoid

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Valuation

First cosmic appearances where to invest

Cosmic segment carried by adaptations: which first appearances to target, the pitfalls of B&W magazines, grading and volatility. Method and re

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Tier list

Power Girl tier list: key issues 2026

Tier S, A, B, C and D. The most systemic discrepancy in the corpus: an entire category, the original rewritings, escapes the indexes and is not paid for anything.

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Key Issues

Malicia (Rogue) key numbers: the collector's selection

Avengers Annual #10, Uncanny What to aim for according to your budget.

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CGC & Grading

Comic Grading: Complete CGC, PSA and CBCS Guide (2026)

Comic grading: CGC scale, labels, census, pressing, and the PSA/CBCS upheaval of 2026, clearly explained before submitting a comic.

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Collector's Guide

The Kingpin's crossovers: Gang War, Devil's Reign and the others

Gang War (1987), Acts of Vengeance, Shadowland, Devil's Reign (2021): the Kingpin participates in events as a negotiator. Its tie-ins are under-identified, therefore accessible.

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Collector's Guide

The Cyclops crossovers: participant, issue or cause?

Present in almost every event since 1963, and that's the problem: the value of an appearance is inversely proportional to its frequency. Only three count.

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Collector's Guide

Carnage crossovers: Maximum Carnage, Absolute Carnage

Maximum Carnage (1993): fourteen episodes over five series. Taken in isolation, none of them are worth anything, combined they form a sought-after whole: the value is in the completeness.

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