FS : IBM Magnetic cards for IBM selectric "compocarte" (?)

[Al Kossow]

On 1/3/20 7:07 PM, Al Kossow via cctalk wrote:
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> On 1/3/20 4:13 PM, Al Kossow via cctalk wrote:
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>> On 1/3/20 1:39 PM, Mike Stein wrote:
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>>> I've got a couple of the drives for those cards somewhere in case someone needs/wants one; rollers to feed the card in and out and a solenoid ratchet to move the head across track-to-track. Wonder if you could build an 80-column card reader out of one... ;-)
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>> Is the on-card format documented anywhere?
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> Turns out there is a bit of info in the office system 6 CE manual I just got
> They have 50 tracks and have a dummy character to align the card when loaded
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> 

http://www.bitsavers.org/pdf/ibm/5520/GC23-0702-3_IBM_5520_Administrative_System_Introduction_Nov81.pdf
page 3-17 5321 mag card unit
50 tracks, 100 characters / track