This issue is a variant of Zap Comix (Apex Novelties, 1967 series) #11.
Underground Comix are known for using different prices, covers (art or color variations) and/or interior content to distinguish between printings.
1st print has 2.50 USD cover. 2nd print has 2.50 USD cover. Says '5 4 3 2' in indicia (not listed in Fogel's guide).
3rd print has 2.95 USD cover. 4th print has 3.95 USD cover. 5th print has 4.95 USD cover.
Jam sequence on inside front cover with characters from their respective creators.
Text with fifteen small illustrations.
Image on back cover of issue.