Home Product Tag sewing thread Zwicky – Iris – Flora – Silk Thread Jean Walther,1940 Zwicky – Sewing & Embroidery Silks Donald Brun,1946 Collector’s Choice Zwicky – Silk Thread Donald Brun,1946 Zwicky – Silk Thread Donald Brun,1946 SOLD Zwicky – Sewing & Embroidery Silks Donald Brun,1946 Gütermann sewing thread Peter Birkhäuser,1951 Grilon – there is only one – swiss textile Walter Grieder,1954 More