城陽郡昌圖書|Seal - Public domain photo of museum object
Summary
A bronze shield with a square hole in the middle, China, free to use, no copyright restrictions image - Picryl description.
Tags
Date
1000 - 1500
Source
Metropolitan Museum of Art
Copyright info
Creative Commons CC0 1.0 Universal Public Domain Dedication ("CCO 1.0 Dedication")