BATMAN by BOB KANE (?)

Probably a fake Bob Kane sketch-- this one has some provenance-- I got it from a gallery owner in New York whose father often worked with Kane and his shows in the 60s and 70s. He found this in a folder in some of his dad's old file clippings and asked if I could tell if it was legit or not. It's a pretty good fake in my opinion and actually has some of the traits Kane fell back on in his limited abilities to draw on the fly.
Real? Fake? Don't care, I like it.