For those like me who is keeping a list of who made sewing machines and accessories for Sears I've added another manufacturer.
On GW there is a Commander badged 15 clone. The Sears model number is 153-271. I blew up the bottom view pic and right across the bottom of the bed is RICCAR.
So I have listed the 153 series Sears machines is Riccar. Subject to change though as more info is gathered.
SEARS SOLD SEWING MACHINE AND ACCESSORIES
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)
Joe