This is vintage 1985 model TORO 521, 21 SNOWBLOWER that runs like a champ! 3-Speed, 1-Reverse Gear, Separate control for auger driver and wheel drive. Chute gears are all metal, in working order. Blows snow – Tested 2/16/2022. 5W-30 Full Synth Oil Change – 2/16/2022. Ran briefly and then run dry on 93 octane. Serial #: 6006072 (visible by zooming in on the photo with the bronze colored plate under the throttle control). I believe it’s the 1985 model based on the serial number and checking “torodeal. Com” for the corresponding serial number.