The actual manufacturer can be identified by the first 3 numbers in the Model Number :
Sears Kenmore sewing machines :
20 = Greist 117 = White Sewing Machine Co. 119 = Unknown 120 = New Process Division of Chrysler Corp. 148 = Soryu ( Japan ) 153 = Riccar 158 = Maruzen / Jaguar 340 = Necchi 385 = Janome 516 = Gritzner Kaiser (W. Germany)
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John T.