Sir Reuben Rosenthal

In the short story The Apples of the Hesperides, Sir Reuben Rosenthal is a English financier and also a collector of fine works of art.

Both Sir Reuben and his American business rival Emery Power were bidders at an auction for a renaissance era golden goblet owned by the Marchese di San Veratrino. Emery Power won the auction but the item was stolen by an international gang of jewel thieves from the Marchese's palace. For a time Power thought Sir Reuben could have commissioned the theft. Even Inspector Wagstaffe told Poirot this was plausible. Sir Reuben was "not supposed to be very scrupulous here works of art are concerned".

Ten years later, however, Sir Reuben and Power patched up their differences and became business partners. Sir Reuben told Power that he did not have the goblet and this time Power believed him.