Here are catalog sheets for 3M Scotch brand Helical Scan tape from 1970.

When playing Videotape Detective, these types of sheets are useful for cross-referencing the manufacturer’s label on the bottom of the reel with what type of VTR it may have been used on.

Scotch Helical Tape Sheet-MV21B-Aug-1970.

Shows Scotch 360 1″ and 2″ Helical Scan Tape.

1″ for Ampex VR-4000, 5000, 6000 and 7000 series,  Sony EV 200 and 300 series, 2″ tape for Ampex VR-1500 Series, 660B, Sony PV 100 and 120 series.

Click here to view: Scotch Helical Tape Sheet-MV21B-Aug-1970-

 Scotch Helical Tape Sheet-MV22-A-Aug-1970.

Shows Scotch 361 and 363 1/4″, 1/2″ and 1″ Helical Scan Tape.

1/4″ for Roberts VTR-1000 Series, 1/2″ for Sony, Panasonic, Concord, Norelco, Apeco, Shibaden, GE, Bell and Howell, Craig, Diamond Power, 1″ for IVC, Bell and Howell, RCA, GPL, Chester, Panasonic, Craig, Diamond Power and Shibaden.

Click here to view: Scotch Helical Tape Sheet-M-V-22A-Aug-1970