extension shown: bib [x]

variantCover

Defined in the bib.schema.org extension. (This is an initial exploratory release.)
Canonical URL: http://schema.org/variantCover

Thing > Property > variantCover

A description of the variant cover for the issue, if the issue is a variant printing. For example, "Bryan Hitch Variant Cover" or "2nd Printing Variant".

Usage: Fewer than 10 domains
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Values expected to be one of these types
Text
Used on these types
ComicIssue

Schema Version 2.1