Last year I posted a Halloween Blue Dot Flash ad from 1977. This year we go back six years to 1971 for the above ad. Below is my poor attempt to recreate the snapshot.
Is it the Ugly Woman mask or the Caveman mask? More than likely the mask was inspired by the Morlocks from the movie Time Machine. Ebay seller mpgstuff has one for sale (click here to view) and the picture below is from the auction.
It would be neat to see an actual boxed mask to learn his Halco given name, but I didn't see any examples on the internet. This mask also reminds me of the 1960s Mr. Ugly Pez.