Burglars forced rear patio doors and ransacked a house in Cookham Road in Maidenhead last week.
They struck between Saturday, April 6 at 11am and 10 am yesterday.
They ransacked the house before stealing a wallet and a black safe with its contents.
The safe may well have been discarded.
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The Met Office has issued a yellow alert for Windsor and Maidenhead, Slough and Wokingham, warning that rain moving eastwards across the south of the country may turn to snow in some places.