They are in fact 960. Thanks a bunch guys. I popped them off and they will clean up well. They have 10 84 stamped on the rear of each. Guessing since the bike appears to be an 1984 thats the year of the brakes as well. 10 must be the month perhaps.

the blog post above explained alot. When i first looked at them i thought they were some cheap junk after thought thrown on the bike to get it out off the production floor but the exposed springs and small design is on purpose. I could probably get some newer models that might perform better but i think i will stick with these as they are period correct and complete the look.

Thanks again for the replies.