3 shillings is worth how many US dollars in 1900?

3 Shillings GBP in 1900 had the purchasing power of about £10.81 GBP today.

3 Shillings GBP in 1900 had the purchasing power of about $17.59 USD today.

NOTE - This historical conversion is the result of many calculations and considerations for which I cannot take credit. The resulting answer should only be regarded as an approximation.