Thanks rhm, I looked at the things you mentioned. It has Weinmann aluminum rims as I mentioned earlier and 36 spokes, also Weinmann brakes. There is no date code on the back of the crank arms. I read somewhere, maybe Sheldon Browns site that they did use Hercules hubs. I did remove the pulley but it is back on and all working correctly although a little pitted. I posted a message in the regular vintage section with a link to this thread.
Thanks, Glen