Cap has been used, I see couple dents on top. But threads are not damaged. This cap is fully operational and functions as intended.  I would rate it an 8, on a scale from 1 to 10.

Important. Please note that this cap has 66mm threads. It is too small for 67mm rim. I tested it on 67mm filter and it did not screw in. So it is made for series 8 filter rim, size 66mm.