The Apple-1 Registry

List of all original Apple-1. If you are a first time visitor and not familiar with iconic Apple-1 computers, please read all the information first.

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Note: This is the 9th entry in the list and not the 9th Apple-1 produced. The Apple-1 does not have a serial number.

'Wendell Sander' Apple-1 - number 9 in the Registry

19 pictures published.


1st batch

Serial number, stamp, label

Likely the handwriting of Steve Jobs
List of all serial numbers.


Bank safe


Existence verified. Known to registry caretaker or expert. According to pictures.


Working condition


Owner Wendell Sander

Serial number on the back

The serial number on the back of the Apple-1 was most likely written by Steve Jobs. According to available information, a forensic analysis has not yet been performed for this Apple-1. However, for some other Apple-1s with a serial number on the back it has been confirmed that it is Steve Jobs' handwriting. More information.


Details of recent restoration / Owner's website. Including information about some peripheral boards, programs, early Apple history and much more.


Mike Willegal has a comprehensive component list for this board detailed in spreadsheet.
The Apple-1 has been modified to become a 32K machine by the owner. A few other parts have failed over the years but Dr. Wendell Sander still have all the original parts that were replaced (including the 4K DRAMs) except for one 2504v (more about this in history section).


Dr. Wendell Sander purchased the Apple-1 and Apple Cassette Interface from a Byte Shop at Blossom Hill Road in South San Jose along with the needed transformers and a Decwriter Keyboard in July or early August 1976. He has no longer the keyboard.
Wendell Sander had contact to Steve Jobs and met him in person while demonstrating a Star Trek game. In August 1977 he became Apple employee #16. He worked on the Apple ][ and designed the Apple ///.
One chip 2504v was replaced by Steve Jobs in 1976 a few months after Wendell Sander purchased it!
Steve Wozniak signed the Apple-1 and added the most unique dedication of all known Apple-1: "To Wendell, a most incredible engineer! Woz. Apple would not have happened without you!" (see pictures). Note by Achim Baqué: I really have to thank Wendell for sharing the amazing pictures and information. Wendell has created some incredible Apple-1 boards, Apple-1 case and an Apple-1 keyboard.


no auction


White ceramic MOS MCS 6502 CPU, plastic AMI S6820 PIA, 32 KB plastic MK4116N3 (7845) DRAM. YES, 32 KB like the Apple-1 #39 in the Science Museum London, but the Apple-1 #39 has piggybacked DRAM.Blue capacitors.


Original Apple Cassette Interface. Power supply.


Very good condition! Breadboard populated with 3 chips on socket. Some wires on the back. All additional components and wires added by first owner Wendell Sander himself to have incredible 32 KB DRAM!


Wendell Sander talking about the Apple-1

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Last update

Jan 02, 2022

Change log (since March 20, 2018)

Apr 06, 2018: Number/Sticker/Stamp info. Owner added. Location. Verification status. Additional info. Website(s). State. Equipment. Description. History
Apr 06, 2018: 3 picture(s) added
Oct 17, 2018: History
Oct 18, 2018: Video link(s) added
Nov 14, 2018: 6 picture(s) added
May 16, 2019: Verification status
May 27, 2019: Verification info added
May 27, 2019: Number/Sticker/Stamp info
Jun 13, 2019: History
Jun 13, 2019: Video link(s)
Jun 23, 2019: State
Feb 11, 2021: History
Apr 03, 2021: Components (shortlist). Components
Apr 03, 2021: Description of picture(s)/video(s)
Apr 03, 2021: State
Apr 03, 2021: 4 picture(s) added
Nov 16, 2021: Working condition
Nov 16, 2021: Serial number. Labels / stamps added
Nov 23, 2021: History
Jan 02, 2022: 5 picture(s) added
Jan 02, 2022: History

Change log for all Apple-1.

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