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 coincidentally, a cropped image of the issue's centerfold (which featured Lena Söderberg) became a de facto standard image for testing image processing algorithms. It is known simply as the "Lenna" (also "Lena") image in that field. In 1970, "Playboy" became the first gentleman's magazine to be printed in braille. It is also one of the few magazines whose microfilm format was in color, not black and white. Playboy's iconic and enduring mascot, a stylized silhouette of a rabbit wearing a tuxedo bow tie, was created by "Playboy" art director Art Paul for the second issue as an endnote, but was