Olivetti's design was a thing of beauty. The current company has nothing but the name. Even their logo was bastartised by the new owners.
This was exactly my experience after visiting the CHM recently. IBM's graphic design still stands out as some of the most beautiful of any tech company throughout history. For others interested, Paul Rand was also responsible for creating the famous NeXT logo.
There's something timeless in the design of the IBM 360, 370 and their peripherals.