The Apple-1 Registry

Serial number on the back written by Steve Jobs

A forensic analysis confirms that the serial number on the back of this Apple-1 is Steve Jobs' handwriting. More information.

Website(s)

TheApple-1.com (owner website)

Description

Looks like the power supply connector was bypassed.
Name in the registry was "Byte Shop 60" until March 2018. The name of the first owner is a better choice.

History

Adam Duston bought this computer, #45 in the Apple-1 Registry, at the Byte Shop in 1976.
Purchased from Adam Duston in August 1996 by David Larsen.
For auction (including replica ACI) at Charitybuzz on June 21, 2018. The highest bid was surprisingly US\$210,000 but did not meet the reserve. After the auction, much higher prices were offered.
Current ownership: After the 2018 auction, David Larsen received several offers, including one from the curator of the Apple-1 Registry, as they have known each other for years. In 2015, Achim Baqué visited David Larsen in Floyd and stayed at his home for two days. David showed him his unbelievably huge collection, including three or four of his Apple-1s. David offered his whole collection, and Achim was ready to buy it in 2016, but Lonnie Mimms was faster. Lonnie bought all but two Apple-1s.
Eventually, this Apple-1 was bought in a private deal after the auction by Achim Baqué in 2018. David had some offers even much higher than Achim’s, but luckily for the new owner, he sold it to him. Achim visited the Larsens again in 2018, was invited to their home, and pictures and videos were made of the handover. It is the fourth Apple-1 for the happy new collector.
It was on stage and exhibited at the Vintage Computer Festival West 2019 at the Computer History Museum in Mountain View. Daniel Kottke demonstrated with this Apple-1 what he had to do as a test procedure at Steve Jobs' parents' garage in 1976.

Auctions

June 2018
(see History for more information)

Components

White ceramic MOS MCS 6502 CPU (4176), plastic Synertek SY6520 PIA (7630). Originally 4 KB plastic DRAM MK406N-11 (7620) + 1 single DRAM chip at B13. Later upgraded by David Larsen to 8 KB DRAM (mix of Mostek, some MK4096-16). PROM A2 from 1978.

Equipment

Replica Cassette Interface.

State

Video RCA connector added (the same modification is found on number 45 in the Registry). Two additional chips on sockets in the proto area. Many added wires on the back. Blue keyboard connector. Power cables soldered directly to the mainboard (later removed by David Larsen). Blue capacitors.
On the back, two cut traces reconnected with red wire.
Some ICs replaced.
Seven DRAM chips added by David Larsen.
The blue socket was replaced with a black one in 2018. The silver capacitor was changed. Additional chips on the breadboard were removed by David Larsen.
After these new modifications in 2018, the board looks different compared to earlier pictures. Some other Apple-1 boards still have the blue keyboard socket—a modification done by first owners. For some, it now looks more like boards from the factory. The RCA connector added by the first owner is still present.

Video

David Larsen presenting this Apple-1.
2018 Historic computer brought to life - Dustin 2 Apple1 (note: Duston 2 is correct. The former owner wrote 'Duston is correct. I haves a copy of one of the money orders I sent a part of payment.')

Before you click on video links make sure you have read and accepted the disclaimer about Youtube links according to the European Data Protection Law (2016/679).

Last update

Jul 29, 2025

Change log (since March 20, 2018)

Apr 11, 2018: Number/Sticker/Stamp info. Components (shortlist). Components. State. Equipment added. History
Apr 11, 2018: Owner added. State (shortlist) added
May 27, 2018: 19 picture(s) added
Jun 07, 2018: History
Jun 08, 2018: State
Jun 10, 2018: Description of picture(s)/video(s)
Jun 21, 2018: History
Oct 06, 2018: History
Oct 06, 2018: Verification status
Nov 13, 2018: Owner. Location. Components (shortlist). Components. State. History.
Nov 14, 2018: 2 picture(s) added. Description of picture(s)/video(s)
Nov 14, 2018: 1 picture(s) added
Nov 14, 2018: Website(s) added
Nov 15, 2018: 4 picture(s) added
Nov 17, 2018: Description of picture(s)/video(s)
Nov 18, 2018: History
Dec 06, 2018: 2 picture(s) added
Dec 07, 2018: Auctions added
Feb 15, 2019: Geo location added. Geo description added
May 27, 2019: Verification info added
May 27, 2019: Number/Sticker/Stamp info
Jun 15, 2019: Components
Jun 25, 2019: Website(s)
Jul 25, 2019: 9 picture(s) added
Aug 09, 2019: History
Aug 09, 2019: 3 picture(s) added
Aug 09, 2019: Description of picture(s)/video(s)
Sep 15, 2021: Description of picture(s)/video(s)
Nov 01, 2021: Website(s)
Nov 16, 2021: Working condition
Nov 16, 2021: Serial number. Labels / stamps added
Feb 09, 2022: Verification status
Apr 16, 2022: 4 picture(s) added
Apr 16, 2022: 3 picture(s) added
Jul 29, 2025: Components. State. Description. History

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