Brandon.....
is partly correct (no offense brandon =))
a all orginal Hoover 300 has no plate on the nozzel like a 541 or 700 etc......instead it has a round green and chrome medallion on the top of the motor.....with a plain chrome nozzel.
@Hans.....i love this machine has such a nice tone to it, and is slightly more like the later Hoover versus a earlier one...motor wise as far as how it disassembles....i know you not a huge fan of uprights, but service this machine well, and give it a good tight belt....and then i think you will find your self using it more and more!