It was eight o'clock at night and raining, scarcely a time when a business so limited in its clientele as that of a coin dealer could hope to attract any customer, but a light was still showing in the small shop that bore over its window the name of Baxter, and in the even smaller office at the back the proprietor himself sat reading the latest Pall Mall. His enterprise seemed to be justified, for presently the door bell gave its announcement, and...