This issue is a variant of Motor City Comics (Rip Off Press, 1969 series) #1.
Underground Comix are known for using different prices, covers (art or color variations) and/or interior content to distinguish between printings.
1st print April 1969 has 0.50 USD cover price. Has no cover logo or copyright symbol on inside of front cover.
2nd print has 0.50 USD cover price. Copyright symbol added to inside of front cover.
3rd print has 0.50 USD cover price. Rip Off Press brand added to cover.
4th print has 0.50 USD cover price. Rip Off Press address on back cover. 1st-3rd print had Print Mint address.
5th print has 0.50 USD cover price. Has matte finish cover. 6th print has 0.75 USD cover price.
7th print has 2.50 USD cover price. Published by Last Gasp.
Inside front cover.
Inside back cover.