This is an original Buick Alternator date coded 9C11 I believe that translates to March 11th, 1969 Perfect for April thru June 1969 models it would not be unreasonable for July or August 1970 models either. My old 1970 Skylark with a 100663 serial number has a 9B20 date code along with many other 69 date coded items. Seat belts, rims and a few other items as examples. Shipping from West Michigan $100 plus $15. To cover freight
It did work when I parted the car due to rust but that was years ago. It is very clean so visually usable but I will look into functionality.
