Fixing a distinct meaning to every single degree of the zodiac is a comparatively recent habit. Vettius Valens, writing in Greek around the year 175, divided each sign into three ten degree faces and rotated a fixed sequence of planetary rulers across them, the scheme behind the Sun's rule over this degree's decan, the second of Aries.
Ptolemy's Tetrabiblos separately records a table of unequal bounds shared among five planets, the source of the Mercury term recorded here. Neither writer attached a picture to any of it, only a planet. A complete run of individual degree pictures first survives whole in 1494, in Johannes Angelus's Astrolabium Planum, a Latin work safely public domain in itself, though no old English translation of it escapes fresh copyright.
The next complete English set came from the Welsh minister turned astrologer John Thomas, writing as Charubel, whose 1898 book gives this degree a man with a sheaf of corn under one arm and a sickle under the other, an image of harvest already gathered rather than still growing. Only afterward, in 1925, did Marc Edmund Jones and the clairvoyant Elsie Wheeler produce the different image now generally read through Dane Rudhyar's 1973 restatement. In practice, this degree is mostly used to time events through a progressed Sun, Moon or angle reaching it exactly, or to flag a second chart sharing it closely enough to matter in synastry, both later refinements over the antique decan and bound system.