Thanks for the comments.
Bill, an NOS one is quite a find and it sounds like it went on an awesome car!
Mark, I think this one is Cutlass based on the label. I think all the 60s CD boxes were the same other than the label and possibly the stamped part number.
I just found this site with lots of info:
https://delcoremyperformanceignitionsystems.net
and more info:
http://www.ebay.com/itm/172551272126
Apparantly the 68-69 Javelin and AMX also used this system as an option.
Jason