38987NAR9,
Workshop Model A,
Catalog No. CL644-A,
9-inch X 4-foot,
Shipped 04/02/1956

Converted to Catalog No.744-A, 16 speed V-belt Horzontial Drive,
the headstock was replaced to get the quick change reverse,
as an added benefit I got more room to change the segmented belt,
John,