The difference in this car and other Impala’s the paint code calls for anniversary gold, the years I checked prior to 62 and after 62 autumn gold was the only gold that was used The car is in need of a restoration. The car is still equipped with the original 327, which does not currently run.
I spoke with the salesman from the dealership that had sold the car new, who stated these cars were limited one to a dealer. Below is an exert from a Hemming's Article.
Feature Article from Hemmings Classic Car
April, 2008 - Daniel Strohl
As to how many of the anniversary editions were built, John Mahoney, the Vintage Chevrolet Club of America's technical advisor for early 1960s full-size cars, said that somewhere between 300 and 350 rolled out of the division's assembly plants, but he has yet to uncover any actual documentation to confirm that figure.