Vintage Singer Buttonholer Attachment with Case and Manual 489500 USA 1960

Vintage Singer buttonholer attachment, model 489500, complete with the original green clamshell case and instruction manual. Made in the USA with patent numbers 2482607, 2536620, and 2547925. Ideal for Singer sewing machine enthusiasts or collectors of vintage sewing accessories. Case and attachment in good condition for age. Packaged and shipped carefully from a smoke-free environment. Check my Feedback and other listings.