Annuals are typically 48 to 64 pages long, significantly larger than standard 20-page monthly issues.
This usually indicates that the scans have been replaced with higher-quality digital versions (likely sourced from Marvel Unlimited or digital trades) rather than older, grainy paper scans. Thor Annual 001-019 (1965-1994) (Updated).zip
Part of the "Atlantis Attacks" crossover event, a massive storyline running through many Marvel annuals that year. Technical Breakdown Annuals are typically 48 to 64 pages long,