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[ried]

Recently picked up an Apple "Lisa Prototype Hobby" expansion card, part number 820-4025-00 copyright 1982. Haven't seen one of these before and figured folks might be interested in a hi-res scan.

I removed the stop screw (?) from the card for scanning purposes, because the scanner's focus is thrown off with the screw present. All four scans, with and without screw, are shown here: https://imgur.com/a/mkq0Cik

[Kelly king]

Neat…thanks for posting!

[bmwcyclist]

I am very intrigued!

[sigma7]

Recently picked up an Apple "Lisa Prototype Hobby" expansion card, part number 820-4025-00

I've not seen one of these either, and AFAICR, haven't heard of it before. Does anyone have one that has a prototype circuit on it?

(Scaled down pics attached for posterity for if/when imgur disappears)

[ried]

Well, that's fun! Didn't think I'd ever come across something new to LisaList    Two more pics of it in hand for reference. Previously owned by an Apple engineer that has since retired to Idaho. He only had the one example.

P.S. Somehow, I did not realize that we could attach images here natively and had been relying on Imgur to host. Will make judicious use of that capability going forward.