condition
保存状態 — Reading
How far a coin has survived unworn and undamaged.
Sestertius of Hadrian117–138
Crown of William III1696
Bank of Chosen One Yen Note1932
The better the condition, the more legible the details of the engraving. ⚠ However, the idea that 'good condition = high value' is a matter for the market; for research, a worn-out piece can be evidence of having been 'well-used'.
What can be determined from a photograph is limited to whether the engraving remains, the edge is not chipped, and the lettering is legible. ⚠ It is difficult to judge from a photograph how the metal surface is damaged or whether it has been polished later. One needs to handle the actual object or have photographs taken from multiple angles. There is a limit to what can be said from a single published photograph.