Asked by Frank Scrimgeer, a newspaper employee says that 100 francs = 2 dollars to 12 cents, but it's not. The action takes place at the end of the XIX century and 100 francs then equaled about 20 dollars.
The character of Perkins was redesigned, and, in favor of greater audience sympathy for him - from a ruined rich heir (who had a capital that gave three hundred pounds of annual income), in the text of a story not named by name, he turned into a poor abstract artist.