On: IMSAI 8080 computer (2004)

[tyingq]

Less faithful replica of the Altair, but much more affordable: https://www.adwaterandstir.com/altair/

There's also a very affordable (< $100, including the needed Arduino DUE) workalike that pops up on eBay every now and again...I bought one: https://imgur.com/a/qntqSMG