This issue has variants.
Speculation has it that In June 1977, Marvel Comics wanted to test the market to see if comic buyers would accept a five cent price increase. Marvel released a 35 cent variant for every 30 cent comic they produced from June to Oct. 1977. This was a total of 184 different comics. These 35 cent variants were printed in much smaller numbers than the normal 30 cent counterpart and were believed to have been shipped to only six distribution locations to be sold in those specific areas.
Verpoorten credit per Nick Caputo, August 2012. Nick previously listed Mike Royer as inker. Previous indexer credited Frank Giacoia, as did Marvel Comics Index #8A.