I had a look and enlarged the image. It shows at least two rather substantial nicks in the outer flange of the head that indicate that they have been pretty well knocked around during their lifetime. If he did take them off an original car, then they have either been on and off several times before he got to it or they have been lying around in the bottom of a tool box or similar for many years since.
They have not been well looked after and I'm sure that there are ones out there in better condition.
Regards from Down Under.