The Simplicity Sovereign 3112H is a 1969 garden tractor from the Sovereign Series by Simplicity. It features a 12 hp Briggs & Stratton 494cc 1-cylinder gasoline engine with an air-cooled horizontal shaft. The tractor uses a hydrostatic transmission with infinite forward and reverse gears. It has a wheelbase of 48 inches, length of 72 inches, width of 34.5 inches, and height of 37.75 inches. Tires are lawn/turf type with sizes 18x6.50-8 front and 23x8.50-12 rear. Electrical system is 12 volts with negative ground. The tractor includes a mid PTO that is independent with a mechanical idler pulley clutch. Attachments include 42" and 48" mid-mount mower decks, both 3-blade. Variants include gear and hydro models with manual or power lift options.