Vinyl sticker is 3 inches, 76 mm in diameter. It is NOT a sewing machine decal but some people have used it on Singer Sphinx models that have deteriorated decals.

I took a photo of my antique sewing machine sphinx decal then did a digital cleanup of the photo to create the sticker.

Line on the bottom says TreadleLady.com

See my store for other sewing machine items and signed book I wrote, Treadle Sewing Machines, Clean and Use an Iron Lady by Donna Kohler. It has lots of helpful information and great reviews.