Never a Tender Moment 1979 - Marilyn Chambers - Rare Classic

TITLE: Never a Tender Moment
YEAR: 1979
Cast: Marilyn Chambers, Erica Boyer, Tana Robinson

The history of Never a Tender Moment is as grainy and faded as the few existing copies of this S&M-themed short.
This short was produced in 1979 at the O'Farrell Theater in San Francisco by Cinema 7, the Mitchell Brothers' film company.
Never a Tender Moment was shot in the theater's "Ultra Room" and featured Marilyn discussing various bondage delights followed by scenes of intense kink, including a notable upside down dildo scene.
This short was only available through direct mail order from the Mitchell Brothers.
It was likely available on 8MM and/or 16MM film first before being converted to VHS.

The quality of this video isn't very high, but it's currently the best you can find.

http://www.imdb.com/title/tt0195943

FORMAT..............: MKV
CODEC...............: X264
GENRE...............: Adult Short
FILE SIZE...........: 335 MB
RESOLUTION..........: 640*480
ASPECT RATIO........: 1.33 : 1
FRAME RATE..........: 25 fps
AUDIO...............: 192 Kbps Ac3 (2CH)
LANGUAGE............: English

SUBTITLES...........: None
RUNTIME.............: 28 mins

Generic infos
Duration 00:27:42 (1661.536 s)
Container matroska
Total tracks 2
Track nr. 1 video (V_MPEG4/ISO/AVC) {eng}
Track nr. 2 audio (A_AC3) {eng}
Muxing library libebml v1.2.3 + libmatroska v1.3.0

Video track
Codec ID V_MPEG4/ISO/AVC
Resolution 640 x 480
Frame aspect ratio 4:3 = 1.333333
Pixel aspect ratio 1:1 = 1
Display aspect ratio 4:3 = 1.333333
Framerate 25 fps
Bitrate (bs) 1499.788261 kbps

Audio track
Codec ID A_AC3
Sampling frequency 48000 Hz
Channels 2
Bitstream type (bs) AC3
Sampling frequency (bs) 48000 Hz
Mode (bs) stereo