Brand: Sinclair Research Ltd.
Model: ZX81
Country of origin: United Kingdom
Made in: Scotland
Launch date: 5 March 1981
Price: £ 49.95 / $99.95
Box dimensions: 350 × 210 × 98 mm
Kit version of the ZX81.
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New old stock. The seller purchased 96 cardboard boxes of 33 boxed kits each (a total of 3200 kits) back in 1988, as can be seen in the video below.
Video of someone assembling the ZX81 kit.