Markings on the back: model no. N4000A, part no. 1403, manufactured May 1991
Available cheap, certainly less than a hundred bucks, likely free.
It's a 68040 on the inside. Been in storage for two decades. Should boot up fine, except for the dreaded capacitor effect,
https://en.wikipedia.org/wiki/Electrolytic_capacitor#Lifetime , which impacts its power supply. Repair / replacement of existing original power supply is definitely needed.
Pizza box, greyscale monitor with cable, mouse, & keyboard will all go together. If there's interest I may be able to come up with additional cabling, such as 10base2 ethernet.
I live in California in the SF Bay Area, mid-peninsula, and may be able to drop it off for you if you live nearby. Otherwise I anticipate you will pay shipping. I kept much of the original NeXT packaging.
Please contact me at next-slab-7793@s6.sector6.net
Include your phone number along with preferred time, and I will give you a call to arrange details.