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1977 Sinclair LED wrist Calculator Watch Kit (New)
[Sinclair ZX]
$1,999.00
 
(Actual Item In The Photo) (New)

1977 Sinclair Wrist Calculator

Display is 8 digits, red LED.

4-functions, %, memory, square root.

8.1v (6x mercury cells).

Integrated circuit - Mostek MK50321N, here date coded mid-1976.

47 x 45 x 18 mm (1.9 x 1.75 x 0.7 ins).

Made in England.

1977.

Was available only as a self-assembly kit, by mail order from Science of Cambridge, previously Sinclair Instrument Ltd.

1977 Sinclair LED wrist calculator

An insanely rare Sinclair Black Calculator Watch Kit in excellent and complete condition.

All paperwork is there, all components are present and correct, the presentation case is pristine and even the cardboard surround is excellent.

The last kit I saw on ebay about three years ago went for over 3000$.
 
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