Playboy Playmate as a "former" Playmate because "Once a Playmate, always a Playmate". Marilyn Monroe, who was featured in the first issue, was the only one to appear as "Sweetheart of the Month." The first model called a Playmate of the Month was Margie Harrison, Miss January 1954, in the second issue of "Playboy". Generally a woman may appear only once as a Playmate, but in the early years of the magazine, some models were featured multiple times. Marilyn Waltz (February 1954, April 1954, April 1955 her first appearance was as Margaret Scott) and Janet Pilgrim (July 1955, December 1955, and October
Playboy calendar rather than for "Playboy". Hefner chose what he deemed the "sexiest" image, a previously unused nude study of Marilyn stretched with an upraised arm on a red velvet background with closed eyes and mouth open. The heavy promotion centered around Marilyn's nudity on the already-famous calendar, together with the teasers in marketing, made the new Playboy magazine a success. The first issue sold out in weeks. Known circulation was 53,991. The cover price was 50¢. Copies of the first issue in mint to near mint condition sold for over $5,000 in 2002. The novel "Fahrenheit 451", by Ray Bradbury,