A rare Mapsoft keyboard for the Sinclair ZX81 computer with 'Maplin Projects Book Three' which has instruction details on pages 28-31. In the same storage box there was a Sinclair ZX81 with a cut in a case for a cable together with a Maplin (what I think is a motherboard) and I/O board which look to be related to the Mapsoft. This is from a private collection estate clearance and I have more computers from the same collection listed separately. The plastic case is very flimsy and there's a split to one corner together with a ding. There's a lot of case screws missing to the base. Other than this it looks cosmetically very clean. The ZX81 has a cut to the case above the keyboard together with case scratches / scuffs and is missing it's feet All items are untested and being sold as not working for parts. Everything that's included is in the photos. Please use zoom on photos which form part of the description.