BOX OF VINTAGE ‘ZWICKY & CO’ SILK THREADS

Box in lovely condition of vintage Zwicky& Co silk threads from Switzerland in various shades of grey.
These are a delight to use, especially when you want a fine thread — fo stitching text, for example.
Collectable.
Zwicky & Co. was a historic Swiss silk thread manufacturer founded in 1839 in Wallisellen, near Zurich, renowned for producing high-quality silk sewing, embroidery, and fly-fishing threads. Their fine silk thread line, known as Iris or Flora, became famous for its smooth texture and subtle lustre.