The phrase "a charming example of" is correct and usable in written English.
It can be used to describe something that is an appealing or delightful representation of a particular quality or category.
Example: "The quaint village is a charming example of traditional English architecture."
Alternatives: "a delightful illustration of" or "an enchanting representation of".
"Concierto de Aranjuez" is a charming example of baile teatral.
The Arab-Norman Cathedral of Palermo represents a charming example of the historical commingling of cultures in the city.
La Sylphide, one of the earliest ballets in the classical canon, is a charming example of 19th-century romantic fantasy, as light as air.
A charming example of Sir Anthony Caro preferring to let his work speak for itself was afforded toward the close of a somewhat long-wordy questionnaire by Peter Fuller in Art Monthly.
The article was a charming example of Boris saying something simply outrageous for attention, and if it feeds into a concerningly Islamophobic public discourse, so be it.
If that association shifts the message of the so-called "poetry-rain" slightly, it also offers a charming example for other places.
It is a grand and charming example of fiction that had to be written.
The absence of seasoning was, to some extent, a testament to the freshness of the catch, the perfectness of a potato (in my favorite of his songs, the great Norsk storyteller Odd Børretzen invites the Lord to come down from heaven and "have a potato" with him a charming example of Norwegian essentialism).
Jean Froissart, the 14th-century historian of feudal chivalry, wrote some of the most charming examples of the late Middle Ages.
Some of the more charming examples of animal imagination come from the female gorilla Koko, who was trained to use American Sign Language.
His last venture, the Printed Blog, is a charming, sometimes beautiful example of what can happen when you connect the immediacy of the web with the permanence of print.
