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Twiggy Macintosh Prototype up for auction at Bonhams

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ried:
Thought folks might like to see the Twiggy Mac's prototype mouse. It's an interesting Lisa / Macintosh hybrid design:

https://imgur.com/a/uJhHunT

The only other one that I am aware of was photographed and shared here over at the 68kMLA forums:

https://68kmla.org/bb/index.php?threads/a-bit-of-a-rarity.36020/page-2#post-388814

TorZidan:
Thought folks might like to see the Twiggy Mac's prototype motherboard.  Found at https://www.bonhams.com/auction/26897/lot/48/apple-macintosh-prototype-the-earliest-known-macintosh-to-appear-at-auction-macintosh-personal-computer-cupertino-ca-circa-february-1982/

The components are the same as on the earliest Macntosh (aka 128k), but their layout is completely different.
Notably missing is the  floppy drive controller IWM (integrated woz machine) "344-0041-a" chip, similar to how it is not present on the Lisa 2/5 i/0 board.

Also, something is odd: There is a IDC20 connector on the back of the board, where the DB19 female connector is on the Macntosh 128k.
Still, other pictures from the same auction show a DB19 female connector on the back of the computer. I can't explain this...

ried:

--- Quote from: TorZidan on November 01, 2024, 07:46:13 pm ---Also, something is odd: There is a IDC20 connector on the back of the board, where the DB19 female connector is on the Macntosh 128k.
Still, other pictures from the same auction show a DB19 female connector on the back of the computer. I can't explain this...

--- End quote ---

That auction included the Twiggy Mac and an even earlier version of the logic board. I agree that the language is ambiguous. From the description:

"Extremely rare early 1982 prototype with the earliest iteration of the logic board to ever come to auction."

fri0701:

--- Quote from: ried on November 01, 2024, 08:15:05 pm ---That auction included the Twiggy Mac and an even earlier version of the logic board. I agree that the language is ambiguous.
--- End quote ---

Huh, that is confusing indeed. Interestingly, the logic board shown here is old enough that it would have interfaced with an Apple II disk drive - pre-Twiggy.

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