Retro vintage Sinclair ZX80 / MicroAce computer w/ 4K ROM chip etc

Retro 1980 Sinclair ZX80 computer with the case, manual 4 K rom chip and original box from a MicroAce clone and more. This is from the estate of an electrical engineer.

We've been told that the MicroAce computer was a complete clone of the ZX80 and that they copied the ROM chip and the rest of the computer (right down to the keyboard). MicroAce was eventually sued by Sinclair and went out of business after losing the case.

We don't know much about this and are selling it for restoration or parts