Does anyone know which pair of Oakleys this part comes from?

[cacatman]

Help needed, please!

Found this rubber piece at the bottom of an old rep case.

Does anyone know where it comes from?

I realise there's not much to go on!!!! Lol.

 

[MicahS]

Maybe the first gen dartboard?? They had an unobtainium insert at the end of the temple shaped like that. The second gen dartboard did not because they dried up and fell out