Richard Corben ROWLF 1971 DOUBLE COVER Error Comic Book Underground Comix ROP For Sale

Extremely rare Rowlf by Richard Corben with double covers. Booknis in decent shape. Planned on getting it graded and authenticated but figured I\'d see what kind of offers I got first. I got this in a collection that belonged to a student of Harvey Kurtzmans at SVA in the mid 1970s. The gentleman stayed very active in the comic community as a co founder of the Comic book legal defense fund. I got a vast amount of underground comix stuff in the collection and this was amongst everything.