New old stock. 4 mm metal zipper, non-separable.
Cotton ribbon. Re'lees-it mark on the zipper. Zip length: 23 cm (9 in.).
Made in the 1950s by Simmons Fastener Corporation, Menands, these innovative zippers feature an anti-fabric jam system with a small tab below the zipper, which can be lifted to release the stuck material from the zipper jaws ( Source: The Knickbocker News - January 22, 1954 - https://urlr.me/gvHBW )
They are therefore perfect for clothing and to use with delicate materials (See the video demonstration).
Zipper # 4 in white metal - Relees-it system - 23 cm / 9 in. (OUR)
- RIBBON DIMENSIONS : Approx. 2.5 cm wide X 26 cm long (1 X 10 in.)
- ORIGIN: USA
- ERA: 1950s
- CONDITION: Excellent!