Platinum

US GOLD

October 90 - January 91

ZX	C64
19	18
Oct 90	Nov 90

Sources

(click here for more information on the data shown below)

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Commodore 64 (Full Price) (Gallup)

18		MONTH to c.90-11-01	CF #04 p74 Jan 91
20		MONTH to c.90-12-06	CF #05 p8 Feb 91 91-01-17

Spectrum (Full Price) (Gallup)

19		MONTH to c.90-10-27	YS #62 p23 Feb 91 91-01-03