Or find a museum with nice people who know what they are doing and are looking for this. Gift or sell to them or borrow it to them (I don’t know the english word) like collectors do with paintings to museums. I have 1000s of vintage computers myself and different places are showing and keeping them. Right temperature etc and fixing them when broken and having many people who can see and try (some of) them. I kept 20 of them to play with which I had many doubles of anyway; MSX, c64, 2600, zx spectrum, Amiga and Atari st.
If you decide to sell; I am interested.