Tax receipt written in Egyptian on pottery is dated to 22 July , 98BC . It says 75 talents plus a surcharge was paid to a bank in Luxor , Egypt . Expert has calculated this would have equated to 220lbs ( 100kg ) of coins . Currency may have been transported to the bank by donkeys . Charge was likely applied because part of the bill was paid in bronze coins . Although it is difficult to calculate what it would have been worth in modern-day terms , estimates place it in the region of $ 1,670 ( £1,120 ) .
Tax receipt written in Greek on pottery is dated to 22 July , 98BC . It says 75 talents plus a surcharge was paid to a bank in Luxor , Egypt . Expert has calculated this would have equated to 220lbs ( 100kg ) of coins . Currency may have been transported to the bank by donkeys . Charge was likely applied because part of the bill was paid in bronze coins . Although it is difficult to calculate what it would have been worth in modern-day terms , estimates place it in the region of $ 1,670 ( £1,120 ) .