Nice find, this is an early Super J, it came out late in 1975, you can tell because it has the PN2 power nozzle instead of the rug saver PN4 that was introduced in 1976, also the earlier Super J models had a white hose, the same color that was on the Golden Jubilee. In late 1977 going into 1978 the hose was gold colored and the machine came with a 5 year motor and fan warranty, due to issues with the earlier Super J armatures going bad prematurely. The Super j was the first year that the machine had a more powerful motor, on the steel all test the Super J picked up 4 steel balls as all the other previous models picked up 3.