Apple 661-0596, 820-0390-03 Macintosh Classic logic board. Comes with 1MB onboard memory or RAM.
This is in working condition as of today, but has low sound. Capacitors are leaking. It has had ultrasonic cleaning and tested again.
These can be great DYI projects or there are people that provide recapping service such as Mac Caps.
Available AS IS, no warranty.