This issue is a variant of Adventure Comics (DC, 2009 series) #8 / 511 [Regular Direct Cover].
Indicia reads: Adventure Comics #8/Adventure Comics #511 (Variant Cover).
Incentive cover shipped in 1:10 ratio to standard cover. Cover is an homage to the cover of Adventure Comics (DC, 1938 series) #300.
Story continues in Superman: Last Stand of New Krypton (DC, 2010 series) #1.
"Special thanks to Dan Foster"