Thanks - its actually what we call a pop-rivet (not sure if thats just a UK name). Its been pulled without being used to fixed anything together. Its about the size of a broad bean seed.
I'm not sure what it is, but it is beautiful and makes a lovely photo. I will guess that it is the handle of an old sword.
hal
05-Dec-2016 00:19
A super photo, Pete, perfectly taken. What it is is still a mystery to me :( l really can't think what it's used for or was used for. l'll watch this space for your solving the mystery.