Material: nickel plated steel
Distributor: Nun’s brand, T. Buettner and Co., Inc., importers and manufacturers of art needlework products.
Patent: 1913 GB 191307763, 1914 US 1091395
1913 ad in Designs for Crocheting in Connection with Coronation Cords, T. Buettner & Co. Inc., Chicago, Illinois, 1913, p. 18.
