sentences:  Five distinct issues showing the running messenger were made.Beginning in 1902 and continuing for 20 years, Special Delivery messengers were issued bicycles to deliver the mail and correspondingly a stamp was issued that year which depicted a messenger riding a bicycle and delivering the mail.In 1908 a helmet of the god Mercury was briefly used for the design, with the stamp often called the "Merry Widow" issue after a popular opera in which the lead singer wore a large hat.