This lot comprises a vintage Singer Buttonhole Attachment, identified by its accompanying manual as No. 86662, dating from the mid-20th century. The attachment itself is constructed from black-painted and polished metal, prominently marked “SINGER,” and is likely intended for use with the Singer 201K sewing machine, as indicated by one of the included instruction booklets. It is presented within its original cardboard box, which is emblazoned with “SINGER BUTTONHOLE ATTACHMENT” and “THE SINGER MANUFACTURING COMPANY” along with the “SINGER SEWING MACHINES” logo. Also included are two paper instruction booklets: one specific to the “BUTTONHOLE ATTACHMENT No. 86662” and another general “Instructions for Using Singer Sewing Machines No. 201K,” which specifies “Printed in Great Britain.”