CarlssonPlanet

Thanks for the information. The large dust cap looked odd to me. I wonder what these are then?
If this is not original then maybe they were changed out with the tweeters because they are the Matushita ones.
It being an AlNiCo driver was confusung/interesting because usually a replacement driver is ...

A couple more photos...

I have what I believe is a SC 165 MkI driver that came from an OD 11. I am having trouble finding a foam surround for it. The driver has a cone diameter of 10.7 CM.
Can anyone confirm that this is an SC 165 MkI and can tell me where I might find a surround that fits?

Thanks!