Skinny girl having a real orgasm (VHS?)

[Avvy]

My best guess would be a VHS from the late 80s or 90s, but that's about it.. Even though the audio is real (thank god no music) they do not speak words. I only have the last 2min30 in where she's having an authentic orgasm.

Any information (video, actress) would be very much welcome!

http://www.imagebam.com/image/fae0c8165543127

[Avvy]

Here's two snapshots of her face, if it helps any:

http://www.imagebam.com/image/6155eb165724887

http://www.imagebam.com/image/88d7a2165724924

Thanks!