Looking for this old vintage porn movie.

I had this movie at my favorites at a porn site most probably at xnxx if I remember correctly. Now it's gone and can't find it anywhere. I think it's and old family "incest" like movie from Color Climax maybe? 70s probably. This image is the only think I found 4 months ago from a possible video existed at MILFZR but now it's not there too.