David,
I think these might actually be Stamco brand. One of my uncles had a
machine that used a disk that looked like this but unfortunately he
can't remember any of the details. This was back in the mid- to
late-70's, I think and he only had it for a short time as I recall. If
one of us remembers anything more I'll post additional info.
Regards, Brian.
On 12/02/2014 12:53 AM, David Griffith 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