This issue has variants.
Underground Comix are known for using different prices, covers (art or color variations) and interior content to distinguish different printings.
1st print February 1979 has 1.25 USD cover price and says 54321 on inside front cover.
2nd print November 1983 has 1.75 USD cover price and says 5432 on inside front cover.
Inside back cover advertisement for Goodman Beaver book from Kitchen Sink Press.
Back cover advertisement for comix from Kitchen Sink Enterprises.