The Computer History Museum in Mountain View is operating an IBM 1401, which was built in 1961. That makes it 63 years old. It runs every Wednesday and Saturday. The oldest functioning disk drive is in the same museum, the 1957 RAMAC; that's nearly 70 years old. To be honest, it's not fully functioning: While the data on disk can be read, they do not allow new data to be written. I think the electronics on this drive has been replaced with modern emulation. Supposedly there is another disk drive the same age in a different museum, which has the original electronics, but it doesn't function fully. I think the RAMAC is also run for demonstration once or twice a week.
I (with a little sadness) agree with the decision for FreeBSD to drop support for the i386. I can imagine that it takes quite a bit of extra work to support, the project is short on humans, and it's not worth it. Even if it forced me to re-install my OS a few weeks ago.