Weird 8-inch floppy disk

[Glen Slick]

On Mon, Dec 1, 2014 at 9:53 PM, David Griffith <dgriffi at cs.csubak.edu> wrote:
>
> I found a ten-pack of 8-inch floppy disks that have me confused.  They're
> from STAM@, a name I've never heard of before.  It's clear that they're
> hard-sectored, but the index and sector holes are along the outer edge.
> There's also a notch cut into the corner.  Both of these appear to be done
> in an attempt to restrict users to a single vendor of floppies.
>
> Here are some pics:
> http://661.org/images/weird-floppy-front.jpg
> http://661.org/images/weird-floppy-back.jpg
> --

See also:
http://www.datormuseum.se/peripherals/terminals/incoterm-spd-20-20
https://dl.dropboxusercontent.com/u/96935524/Datormusuem/Incoterm/Hard%20sector%20diskette%20for%20Incoterm.png