US-1041-AL | Bobbin Case Base Union-Special / Lewis stitch, Blindstitch models : 16-100, 16-100H, 16-290, 16-400, 16-410B, 16-410T.
US-61413 | Union-Special BOBBIN CASE
US-63913-A | SC639 | Bobbin Case for Union-Special 61200, 61400, 61900, 63400, 63900.
