How much old Post Office Savings book balance worth today?

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whtgirl469 23yo Dallas-Addison, Texas, United States

My mother passed away in December. In going through her affairs I found a Post Office Savings book. It had a balance of ?1, 1 shilling and 7 pence in 1954. What is it worth now? more on Geo altCom
runningismyhigh3 21yo Alexandria, Virginia, United States