Tsuruta lithograph mystery - solved

I came across a framed and matted lithograph that closely resembles Ichiro Tsuruta’s piece Ecstasy but differs a bit in some details such as the eye, profile, and earring. I’m not sure if this is an inexact copy of that work by another artist or a variation by Tsuruta. There is no signature visible, and the matting makes it impossible to look around the edges without pulling it apart. The last picture is an image of the original work. Any ideas?