Average sales per issue - 532,135.
On sale date from the publication date reported to the U.S. Copyright Office found in the Catalog of Copyright Entries, Third Series, Volume 23, Part 2, Periodicals, January-December 1969. Class B periodical. Copyright registration number B482078.
Superboy figure redrawn by Adams, per Brian Hay's Blog:
Nick Caputo agrees, suggesting that Superboy's face may be by Novick, with the rest of the figure redrawn by Adams.