Who Manufactured the 1968-1970 Super 12?

Does anyone know who manufactured the 65-70 Super and SS tractors for Sears?

A friend thinks it was Simplicity?!

Thanks,

...Dwight...

HI
MY THOUGHTS WOULD BE ROPER, TOO MANY ROPER DESIGNED PARTS ON THEM, BUT THEN WHEN LOOKING AT THEM AND THE CUSTOM SERIES COULD MAKE YOU WONDER, BUT I CAN SEE WHERE THE WERE TRYING TO CUT MATERIAL COST BY CUTTING WEIGHT, REAR HALF WAS THE SAME WITH LIGHT WEIGHT FRONT SUSPENSION AND STEERING, DECK BELT ARRANGEMENT WAS LIGHTER AND CHEAPER. THE BUYING PUBLIC WAS WANTING A LIGHTER AND CHEAPER UNIT LIKE MADE IN JAPAN AT THE TIME, WHITCH WE NO KNOW WAS BETTER THAN JUNK BUILI IN CHINA, WE KNOW THERE IS A LOT OF EXPENSIVE METAL IN A SUBURBAN AND ONAN, ALSO THE 16 HP. TECUMSEH AND 13-14-15 HP. CAST IRON BRIGGS WERE EXPENSIVE AND HEAVY, NEED A HOIST TO LIFT EITHER, NO ONE NOTICED BUT ALL THE FRAME COMLONENTS GOT LIGHTER GAGE METAL AS THE YEARS PROGRESSED.
YALL HAVE A GOOD AND SAFE DAY
JIMMY
IN WARM SOUTH GA.

I agree with Jimmy in Georgia. Based upon the Super 12 part numbers, 917.XXXXX, it was most probably made by Roper. 917 was later used for American Yard Products, too, but that was much later than the 1970s.
From the Craftsman OEM list at http://vintagemachinery.org/Craftsman/manufacturers.aspx?sort=1

917 American Yard Products
917 Frigidaire
917 Roper Corp

Good luck,
Jim