Dates
- Cover date
- September 1988
- On sale
- June 11, 1988
- In stores
- May 19, 1988
- Pages
- 36
Values
Looking up values…
Editions and covers (4)
Copies of #21 are not all the same book. Here is how to tell each one apart.
- Direct edition75¢ cover
Direct
No UPC barcode in the corner box: direct editions show artwork, a logo or a blank box there.
This edition’s page - Newsstand edition75¢ cover
Newsstand
A UPC barcode in the cover's corner box.
Barcode 0709893067509 · shared with another edition
Source ↗ - Canadian price edition1.00 CAD cover
Canadian
Printed cover price 1.00 CAD.
Barcode 0709893067509 · shared with another edition
This edition’s page - 3rd printing
Third Printing
Marked as a later printing on the cover or in the indicia.
This edition’s page
Publisher’s description
Who is this new Supergirl? Where did she come from? What is the secret of her powers? And what does Lex Luthor have to do with all this? Continued in ADVENTURES OF SUPERMAN #444.
Reprinted in
Superman: The Man of Steel (2003), Superman: The Man of Steel (2020)