Greek ornamental pattern. Digitally enhanced from our own original first edition of The Practical Decorator and Ornamentist…
https://www.rawpixel.com/image/262891/free-illustration-image-19th-century-grammar-ornament-greek-grammar-ornamentFree Image from public domain license
Vintage pattern. Digitally enhanced from our own 19th Century Grammar of Ornament book by Owen Jones.