“One Hundred Alphabets for the Show Card Writer” was published in 1919 to afford sign artists the ability to create signs and show cards in then-contemporary lettering styles.
One such alphabet was big, bold and representative of the Art Nouveau stylings popular in the early part of the 20th Century. Most likely it was applied to store sales and public events that were casual and informal, for its letter forms are free of any constraints.
This design is now available as Fun Time Nouveau JNL in both regular and oblique versions.