The issue is actually labelled volume II rather than issue 2 on the cover and in the indicia. This was published in 1975, while Print Mint had published issue 3 in 1973. The bottom of each page also features cartoons drawn by Shelton in the early 1960s.
Thanks for Vance Bass and his "Hog of Steel" archive for some of the reprint credit information.
This reprints what was a color cover in black and white.
This is the first Wonder Wart-Hog story. From January 1962. In these early stories Desanex's name was spelled differently.