It's almost difficult to imagine a world when only 4 or 5 Batman action figures had been released. However, this was the case when this figure was released in 1979. He's part of Mego's Pocket Super Heroes line. Mego had great success with their 8" Super Heroes. This success led to things like 12" figures, bendies, and even 3 3/4" action figures like this guy.
With 6 points of articulation, this Batman can't do much but he's still a very cool momento from Batman's action figure past. His head and cape were molded in one piece from a somewhat soft rubber material.
Other figures in the line included Robin, Superman, Wonder Woman, Spiderman, Hulk, and Captain America. The paint applications on these were fairly minimal without small details like eyes or even the yellow portion of Batman's chest symbol. Mego even produced vehicles like the Batmobile for these figures to tool around in.
I picked this guy up on ebay earlier this year. I was surprised that he was in such good condition when he arrived. I'm always happy to add another minty, vintage Batman to the collection.