Coca-Cola was originally invented by John S. Pemberton on May 8, 1886, as a medicine, thanks to its trace amounts of cocaine (hence the "Coca" in the name).
In 1887, the now-familiar 'Spencerian' script was first used. In those days, the script varied depending on its application, and the word 'Trademark' also commonly appeared at the bottom of the first 'C'.
A new logo was released for Coca-Cola in 1890, which featured more swirls. The logo appeared to have been deemed unpopular, as the logo was quickly reverted a year later.
By 1891, the script began to be standardised.
In 1941, the wordmark was edited and became more italicized. This evolved into what would become the company's longest-used design to date as well as one of the most famous logos in history.
In 1987, the wordmark was modified with a bolder, slightly straightened-up version of the script. This was used until a revamp in 2003, but briefly returned in 2006 during The Coke Side of Life campaign alongside the main logo and removed again in 2009 with the new Open Happiness campaign.