Original Art Illustration, from Giovanna Casotto, who pencilled this pin up.
It was then inked by Liam Sharp - a very rare (most likely unique) cooperation!
Signed with her full name by Casotto, and under it with the characteristic LS of Sharp.
Casotto is one the worlds most famous erotic comic artists and one of the few women in the industry!
She often draws herself in her comics; also this image appears to be Casotto herself.
Liam Sharp is a British artist, who started for 2000AD, but soon became a highly in demand artist in the USA for both independent as well as mainstream comics.
He worked among others on Green Lantern, Wonder Woman, The Brave and the Bold, Death's Head II