Home Product Tag sewing silk SOLD Zwicky – Sewing & Embroidery Silks Otto Baumberger,1927 Zwicky – Sewing & Embroidery Silks Otto Baumberger,1927 SOLD Zwicky – Sewing & Embroidery Silks Jean Walther,1939 SOLD Zwicky – Sewing & Embroidery Silks Jean Walther,1939 SOLD Zwicky – Sewing & Embroidery Silks Jean Walther,1946 Zwicky – Sewing & Embroidery Silks Donald Brun,1946 SOLD Zwicky – Silk Thread Donald Brun,1946 SOLD Zwicky – Sewing & Embroidery Silks Donald Brun,1946 Collector’s Choice Zwicky – Silk Thread Donald Brun,1946 Gütermann sewing thread Peter Birkhäuser,1951 SOLD Zwicky – Sewing & Embroidery Silks Donald Brun,1953 More