based on spitting image or not...

T’other way around, Jackie, according to the OED citation quoted in Dody’s excellent Linguist link:

…the following OED citations:
(1690) We are of our father the devil,...as like him as if spit out of his mouth.


http://www.emich.edu/~linguist/issues/4/4-780.html

(great detective work, Dody!)